Dear doubleohpsycho
I recommend that you download and run this
specific uninstaller first. Reboot your pc afterwards. Rightclick on the installer click on run as administrator.
Did you
first removed any pre installed security software? If not follow
these instructions. You can upgrade for free to BitDefender Internet Security 2008 if you want. What is the version number of the installer it must be 10.2.xxx and few other numbers? To check that rightclick on the installer and choose properties,version. The 2008 line has a better vista support.
Best regards
Niels