Just finished my new build and I loaded up Vista Ultimate x64 and installed all the updates. SP1 didn't show up on the updates. I then read the Microsoft Knowledge Base article about the problem, and tried the solutions they suggested. No go. Now, I have downloaded the SP1 x64 Standalone, but before I install, I just want to make sure it won't mess anything up. I read a bunch of articles, but they were from when SP1 was first RTM, so am hoping for a little newer advice, that if its not showing up, even after doing the "fixes" then you shouldn't update, what do you guys think?