Manually uninstall?

I upgraded to Mac OS X 10.6 (Snow Leopard) and noticed that Parallels seems to be damaged (Parallels Desktop 4).

I figured I'd uninstall & re-install -- but the uninstaller tells me Parallels is not installed. I figure I should fully un-install & re-install, but I don't seem to be able to do either.

I've searched forums for how to manually uninstall Parallels but the articles I am finding refer to old versions with references to directories and files that are not used in Parallels 4.0 (which is sad since they actually did mention everything Parallels would have added to the system). I found one knowledge base article for Parallels Desktop 4.0 and references an uninstall shell script, but running that complains of several missing components and then ends without actually uninstalling anything:

At this point I think I'd prefer to just manually uninstall everything.

Is it possible to get a complete list of every directory, file, etc. that Parallels Desktop 4.0 would have added to my Mac so that I can just manually delete them to ensure I have completely removed everything?