I use Windows Vista Ultimate edition, and yes, at first it sucked ass. But, after I downloaded dozens of updates for my devices. It runs just fine. Windows Vista would suck if you did not spend the time to update everything properly, I would agree. And to solve the problem you are reporting about having to hit okay to run the program. Turn off user control accounts, that is one of the worst things about Vista, and you should not have it on.
(let the insults commence)