I put it in this morning, took about 30 minutes. I have a Xp3200, asus A7n8x-E, 1.5 gig ram, ATI X1600 Pro. Everything looks very pretty, different in a good way I think, some of my parts won't work such as my Sil3112 raid controller and HP psc2110 printer. D20l wouldn't run cause of the Java which was downloaded with it, Boinc ran from another drive OK, some web sites won't cooperate such as CVS when refilling a prescription.It rates my video card higher than my CPU in the Vista compatability ratings.It seemed a bit sluggish but not enough for me to not want to use it. I still have to boot into XP PRO to take care of business...I will work with it more and see what else bugs me about it. :D