To uninstall completely:
1. Go to the control panel. Use Add/Remove programs to uninstall BillingTracker Pro.
2. Go to the control panel, open ODBC data sources (in Windows XP it is under Administrative Tools)
3. In ODBC data sources, go to the User DSN tab. Highlight BillingTracker Pro, and click on Remove and then OK.




Remove the registry definitions:


Note: ONLY remove this key. Removing anything else can seriously impair the operation of your computer and BillingTracker assumes NO responsibility. It is better to NOT remove the BillingTracker registry definitions than to do it wrong.

You need to Run regedit.exe, and remove the key:
HKEY_CURRENT_USER\Software\BillingTrackerPro

Just expand the tree one by one until you find BillingTrackerPro, and press "delete" when BillingTrackerPro is highlighted.