The Windows 7 WinPower Experience
If you have tried to install WinPower on a Windows 7 computer, please fill out the following questionnaire. We will try to use your experience to help assist your colleagues as they purchase new computers with the Windows 7 Operating System. Thank you very much for taking the time!
(Pending this, we recommend acquiring and installing XP on Windows 7 systems that are not permitting WinPower to work...)
Also, see some suggested solutions here