the author of this app says:
2xCalcDB is the refreshed database for currency rates.
The database features more than 150 rates, all updated on a regular basis.
Download 2xCalcDB.pdb and install it on a Palm device. Launch 2xCalc to list and download currencies.
Older settings with matching symbols will be refreshed.
2xCalcDB is free for 2xCalc registered users.