I think I read that only 64 bit Vista is supported. This may have changed as it was a few years ago when I was looking into it. You can look up system requirements on PTC's web site. They should list all the supported OS's for various ProE releases. I tried to verify or find a link for you but the site is down for maintenance at the moment. Wait. I just found this on
proengineertips.com anonymous wrote:
Only Pro/ENGINEER Wildfire 4.0 is supported in Microsoft Windows Vista Ultimate edition and Microsoft Windows Vista Business edition. Pro/E Wildfire 3.0 and older versions is not able to run on Microsoft Windows Vista.