When I try to uninstall VFP7.1, after the upgrade to XPSP2, I get only a terse message like "This product cannot be uninstalled." (Most of my machines have 7, 8, and 9 on them.) I didn't think much of it at first, but now it's causing different results in VFP8 & 9 testing, if the VFP7 runtimes are still existing...

That is, I want at least one clean machine with VFP8.1 ONLY for isolated testing. No VFP7, no VFP9.

I know a crude technique for removal (delete all the files, and then clean the registry), but anyone know any easier/better ideas to get past that VFP7 uninstall blockage by XPSP2?