Sorry, I posted this under the original post, which I now realize no one is likely to see...
Yes,
We run two seats of CADDS 5i V13 on Windows-based HP workstations (windows
2000) along with 10 seats of Unix-based SUN Ultrasparc workstations.If you've ever dealt with PTC on CADDS support, you know it can be quite tedious. I can check w/my IT guy, but I believe they do offer support for this setup. We are doing it like this for exactly the reason David mentioned, we are slowly (much too slowly for my taste) migrating to Pro/e WF2.0 AND it was for the same reason! PTC intends to discontinue upgrading and supporting CV in the future (although I cannot remember when).
Does it run as well on the PC as on a SUN...no. It can run on a windows maching only through a UNIX emulator which can cause problems. We had many computer lock ups when we first did this, on very simple commands, too. We struggled through it and they work much better now. One of the things we had to do, was add a delay to some of the command prompts. What was happening was if you clicked an icon (refresh, for instance) and then clicked another icon too soon, it would freeze up. However, they still are not quite as stable as the Unix-based SUN systems.
The other problem, of course, is with any work performed on these seats is not backward-compatible with our 10.0. A good workaround there is to "construct part" of the geometry which can then be inserted into an earlier version (don't know why). Of course, this doesn't help much with dimensioning...
Hope this helps, Da Crew!