Karen,

I would strongly suggest that you U/G to AT LEAST P6. Having looked around you site (which is very very nice BTW) I think you'll soon get hooked on Dynamic clothing and the controls in P5 are pretty crude, also the renderer options are improved from P6 forward, and I think you'll get better use from them.

Personally I installed Poser 7 earlier than many people (can;t say exactly which version it was at the time) but I've never looked back. It's been very stable on my system (oh a few glitches but nothing major). I can honestly say I wouldn;t go back to P6 at all! I have fallen in love with the morph brush tool, using it the way i understand some peopl use zbrush to fix poke thru and creat morphs for commercial products. I also like the additions to the renderer and lighting. And the newer library inhancements are well worth a look.

Anyway you asked so that's my opinion! Good luck however you choose to go and I look forward to seeing more of your fine work.

mike