the author of this app says:
Images Control CE is an image viewing (.JPG, .BMP, .2BP, .XMB) software for color P/PCs. The program was primarily designed for the Casio Cassiopeia E-100/105. However, it should run on other P/PCs of the same class such as the Compaq Aero 2100, 2150, 2180, 1500, 1520, 1530, HP Jordana 420, 430, 430SE, Philips Nino 500, 510, etc. running Windows CE 2.11 or ActiveSync 3.0. Using Images Control CE, you can view images one by one or put all the images you want in an image list and start an automatic slide show with adjustable timer interval. The Pro Edition of Images Control CE includes a desktop utility that allows you to convert about 40 different image file formats (BMP, WMF, JPEG, PNG, TIFF, PCD, FPX, MAC, PCX, WPG, TGA, MSP, PCT, RAS, etc.) and copy them to your P/PC.