Well, yeah UAC disables the "Do you want to run this program" I figured that out a while back...I personally use the anthem.exe for the second client. Also Windows Vista don't know whats different between you guys' and mine, since I can run 6 clients at a time so far...I wouldn't reccomend it, as you'll have trouble going to one then the other. For Dual Client I keep one minimized, that seems to help a bit...except with lag spikes...