New version:
- slots titles and slot data can be freely chosen
- exchange rate in EUR

Settings:
http://img703.imageshack.us/img703/615/settingsd.th.png

Resulting Widget:
http://img534.imageshack.us/img534/2986/devicey.th.png

With the current program design it will be pretty easy to add new data. So tell me which data you want to be able to display.