Many corporations want to control Windows Updates so that an errant update doesn’t accidentally download and conflict with corporate software. Usually, this process is transparent to the user, and no one likes to stop and do Windows Updates, anyway.
However, this also makes it a huge pain in the rear to get the correct Microsoft Printer Drivers for new printers being installed. usually, you can just tell it to search Windows Updates for the best printer driver, and it installs itself. But, this process comes to a screeching halt if Windows Updates are being controlled by your mythical “administrator.”
Luckily, there’s a little way around this:
http://technet.microsoft.com/en-us/library/cc753091.aspx
Only do this if you know what you’re doing, and you’re OK with undermining your corporate policies. =)