Can’t uninstall Viruscan Thin Client 6

I installed Viruscan Thin Client 6 and then decided to go back to Viruscan 4.5.1. I uninstalled the Thin Client, but when I try to install 4.51, I get an error message saying that the thin client is still installed. I have manually deleted the obvious files and removed any references to ‘mcafee’ from the registry. Does anyone know how to GET RID of Viruscan Thin Client 6 from Windows 2000 Pro?

Shaun Crass