@PpHd: well there is some documentation on the usb port for the titanium and the 83(was it the 83 or 84 that had the port?....) there is also some on the v200 apparently .......i think it's called the "tixx guide" and it might be on ticalc.org

@squalyl: well the best idea is to let it "sit" on top of the os so yes it should be a kind of application.........(idea!......what if it is a simple scripting language).....and i don't like the idea of widgets.......but it depends......as long as it doesn't over complicate things........

speaking of usb...hah i found it!..... Fichier joint : hwguide.rar
hope that might help .....
and this to: Fichier joint : tixx_guide.rar

hope that helps.....might be able to help you on the usb.....and the gui...if school doesn't get in the way