UAC - User account control. Go into the control panel, search UAC, turn to off and reboot. Life suddenly gets a whole lot easier. =D

64 bits are the future, no question. Only problem is it only becomes viable if you have a program that supports it, or if you have more than 3gb of ram. But I've been running Vista 64 for the past 10 months or so, and had very few problems that weren't solved by a quick Google search.