Run Windows Update As Administrator?

I'm running windows home premium 32-bit on a personal computer; no network administrators or anything, no users other than myself, and no other user accounts other than this one, which is marked as administrator. I seem to be unable to run windows update as an administrator, though. When I go to change the settings, they ones for when windows update runs(the four that control what it does automatically and what it prompts me for, as well as the time and frequency it would run automatically) are grayed out. There's a note at the top that some of these may only be accessible my my system administrator(me). This is a picture of the settings page: i29.tinypic.com/jfc2ut.jpg

I tracked down wuapp.exe in system32 and tried to run that as an administrator via right click; no change in behavior. Tried to go and check the "run as administrator" box in its properties, but that's disabled. That seems to be true of everything in the system32 folder, perhaps there's some way I can circumvent this block?...............