I've run all Poser versions (except 7Pro since I don't have that)  on Vista with no problems. Vista is fine for running Poser.

You MAY like to turn off the UAC (User Access Control) - Vista is overly paranoid and I know it can cause problems at least with Poser 8.

Also, do not install Poser into C:Program Files - Vista is silly and is again overly paranoid with that area - so some programs may not be able to run from that location.

Most places, if you buy a new computer with Vista at the moment, it will include a free upgrade to Windows 7. But I've never had problems with my Vista. Then again I LIKED WindowsME and Poser 5, too....

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You just can't put the words "Poserites" and "happy" in the same sentence - didn't you know that? LaurieA
  Using Poser since 2002. Currently at Version 11.1 - Win 10.