I'm running VMWare 2.0.7 on my 4 month old iMac 27" i7 machine, with Windows XP. I mostly use the software for my Astrophotography stuff, lots of programs are only WinTel. Is it worthwhile for me to spend $39 to upgrade from 2.0.7 to 3.1? I can assign 2 of the i7 processors now, per what I read 3.1 will allow me to assign all 4? That could help speed up some of my star trails stuff and image stacking..... (100's of images being processed take hours) So, for those that have upgraded 2.0,7 > 3.1 would you do it again? Have you noticed real world improvements? Just trying to gather info before I spend $39.