Tried running Poser 9 under the Windows 7 (and all the others listed) mode -- No go.

Upgrade to Poser 10 is not an option right now... although "DAZ Studio for free and never looking back" is looking particularly tempting at this moment...

Any other possible fixes for Poser 9?

What does the SR release for Poser 10 fix that makes it Windows 8.1 compatible? Is that something that could work for Poser 9 and/or 8?