I installed 32 RC1 no probs at all, smooth as silk. 64 however, totally different story. Booted from disk ok, let me choose HDD, went through beginning, 1st reboot, BANG. Nothing. Black screen, rebooted manually started ok, went to black screen again and again. Couldnt install at all. Ended up giving up and now just use XP and 32 RC1 Vista. Shame cos i really wanted to try the 64 as am gettig a new CPU this week