If you have a

Tumblr account

, then you might be interested in finding some ways to spruce up your

Tumblr page

. Fortunately, Tumblr has many themes available and you can customize each Tumblr theme to your liking. We'll show you how to

change your Tumblr theme

and

customize your theme's appearance

in this episode.

You can

customize your Tumblr account

to give it more personality. Not only can you

name your blog

, you can also

add a blog description

and

add a photo

for people to see on your account. If you want to make your account, you can also

choose a theme for Tumblr

that you can even customize.

Within Cydia, you'll find a wealth of excellent programs for your iPhone. These are apps that Apple won't allow in its App Store for one reason or another. The only way you can access these

unauthorized iPhone apps

is by

jailbreaking your iPhone, iPad or iPod Touch

. You can also find themes that will completely change how your iPhone looks and acts.

When you get your Android phone, it comes with a default screen setup. For example, the HTC Incredible, used in these tutorials, comes with the HTC "Sense" home interface. Many people like to customize their devices, including changing out the "home interface." Doc takes a look at three of the best home replacements for Android phones.

You have stuff to say, the only thing keeping you from speaking your piece online is that you don't have the digital soap box on which to do so. Enter your very own blog. Jay Goldman runs through

the best blogging platforms

that'll have you up and running (or is that ranting?) in no time. If you're looking for

advice on starting your own WordPress site or blog

, look no further.

You love your BlackBerry and you want to make it your own. One way to do that is to customize it with a cool, new theme. Here's where you can find some

free themes for your BlackBerry

!

To

customize your BlackBerry

and make it truly yours, it's often good to apply a new theme. Okay, so once you find a theme you like, what do you do with it? Michael "Doctor File Finder" Callahan demonstrates

how to apply a new theme on a BlackBerry

.

While Windows 7 is looking newer and shinier than its computing cohorts, it's still in dire need of a little personalization. Redmond's latest actually has its nose open and doesn't require any third-party software, any hoop jumpery or skullduggery to enact your pimpery.

Creating a custom theme in Windows 7

is so easy, it wouldn't be worth doing if the end product didn't look so sweet.

Lucas demos a poor man's pimp to in his quest to get that Windows 7 look and feel without having to mail his next paycheck to those fat cats in Redmond and without docking his pimp ship in the pirate bay. With a few perfectly timed pimps, Lucas gets his weak

Windows XP install looking more like Windows 7

. Line up, ladies.

Lucas lays his pimp hand upon the Mac OS X to take it from the default to the dope.

Customize the menu bar, the Apple menu logo, the Dock.

Even the calculator and iTunes get some Lucas love as he turns out sweet

Mac OS X skins and customizations

using Magnifique. You'll never look at OS X the same way again.

Continuing the XPimp series, Lucas turns his attention to two of Microsoft's biggest and mods his

XP desktop

with a free Halo theme. With new sounds, new cursors, new icons and an add-on color scheme, XP goes from XPOS to XPimped in no time flat.

Michael "Doctor File Finder" Callahan runs us through Gmail Intermediate Studies in this 10-part tutorial series. Learn how to

tweak your Gmail inbox, use labels, colors and filters in Gmail, get offline Gmail access with Google Gears

and much more. If you've watched our 10-part Gmail for Beginners tutorial series and are ready to

take control of your inbox

, the Doc abides with Gmail 201.

When Google launched its

Chrome browser

one thing everyone could agree on was that it was plain. No flair, not much color, just blah. But no more! Google recently announced the launch of

themes for Google Chrome

. You can install the one you want or change themes every day, should the mood strike. However for the time being, you'll have to

get the beta version of Google Chrome

to partake in themes.

You may have a home page in your Web browser. You may have it customized to have the news and other information you want. With Windows Live, however, you get your own

personal space

that you can customize completely. Customized the Web address, the theme, the content, and more. You can maintain your own "blog" and keep it updated. You can invite family and friends to your space so they can see your photos, blog, and whatever else you want to share.

Ubuntu Linux is a full-featured operating system. You can configure it in so many ways including the way it looks and acts.

Change the desktop background, add icons, use 3D effects

and lots more.

When your BlackBerry comes from the factory, it uses a standard look and feel for the menu system. It doesn't have to stay that way. There are literally thousands of themes you can find all over the Internet. Just search on "blackberry themes." Here we'll show you how to apply a different theme to your BlackBerry device.

The basic Gmail inbox interface is simple and effective. However, by digging into the settings a little way, you can find a skin for your inbox that better suits your personality. Select a different colour scheme or opt for a completely different look with picture / character themes.

Now that you have your very own blog, it's time to customize the way it looks. Blogger gives you tools to easily change the template of your blog, the colors, and even the font. Each page element can be adjusted to match the personality of your blog and make it stand out.

If you've taken the time to set up your very own Wikipedia account, then you should probably dive right into your preferences and make Wikipedia look and work the way you want it to. Don't like the way the articles are displayed? Change the theme! Want more out of your Wikipedia account? Add gadgets! There's more than meets the eye here, so don't be afraid to poke around and change things up.

By default, Windows XP uses a blue color scheme, sets a desktop wallpaper you may or may not like. Customizing your PC by changing the color scheme, window appearance and other elements to give it a look and feel you like is easy in Windows XP.

Sometimes you just get tired of looking at the same old screen. With TuneUp Utilities you can completely change the look and feel of Windows XP. Everything from the system icons, the login and logout screens, the behavior of windows and more can be customized in just a few simple steps.

Tired of the way Windows looks on your PC? Using the Windows Appearance options, you can change it quickly and easily. You can make your PC harken back to the days before Windows XP and completely change the color scheme, background color and more.

Our ten-part series on the Firefox browser gets in-depth, up close and personal with Mozilla's browser. This browser is available on Windows and Mac platforms as well as Linux and has gained significant market share in the past couple of years. It's time to figure out what the fuss is about!

Michael "Doctor File Finder" Callahan runs us through Gmail Intermediate Studies in this 10-part tutorial series. Learn how to

tweak your Gmail inbox, use labels, colors and filters in Gmail, get offline Gmail access with Google Gears

and much more. If you've watched our 10-part Gmail for Beginners tutorial series and are ready to

take control of your inbox

, the Doc abides with Gmail 201.

Lucas Cochran helps you

customize, personalize and trick out that boring beige box PC

. With everything from theme packs, cold cathode lighting, case mods, skins, stickers, markers, paint and just about anything you can imagine, Lucas makes your erstwhile weak PC into something you'll want to show off at a LAN party.