I too installed MusiGuide and found that it had changed my registry settings
for Interbase. I went in and fixed them, then tried to start MusiGuide and
it popped up a box which told me that my "...clock has been turned back.
Please re-run the application", I hit OK and then saw a screen that said the
"License has expired." (This screen didn't have an exit button of any kind.
A newbe who didn't know about Alt-F4 would be stuck!)

No fun at all!

-- Greg