Flash Player problem

Vista premium user.

I was told that my Flash Player was causing a problem and that it would be best to uninstall it. I did this (silly me), using the downloaded special uninstaller, but now I cannot reinstall FP9. At least it gives the impression of going through the motions of installing, but, push come to shove, the program does not work. Also, it does not appear on the list of programs and features (which is probably why it doesn't work!)
I have used the troubleshooting area of Adobe to no avail.

Anyone any ideas?