The best day in my 'poser' life came when Jeff H answered my question with "Yes, you can have as many Poser installations (on different partitions)as you want..." So far I have 3 Poser 4s and 1 poser 5. Haven't used P5 yet. I strip down each one to the bare minimum. Cause I WANT IT ALL!! Oh yeah, 2 80 gig hard drives help. and a lot of fans. No Cure, LOL!