Hello All, On my new Athlon based computer, I just installed SW and SP2.1, then tried to install the SWX and got this message: An AMD K6 processor has been detected on this computer. A patch is available BLAH AMD BLAH BLAH Solidworks. To get this patch, please go to: [URL]http://www.and.com/products/cpg/k623d/solidworks[/URL] Well the address didn't work, but I did find the patch. there are two one for 95, 98 etc., and one for NT, 2000. But XP isn't mentioned, so should I conclude that A) I don't need it, and stop worrying, or B) Download and install the NT/2000 patch? TIA, Muggs