Hidden XP Update File

My Automatic Windows Update system has downloaded the SP3 file and continues to prompt me to install it on my XP Media Center PC. I don't wish to install it but am unsure how to delete an already downloaded windows update file. Where is the SP3 update file and how do I nuke it?

 

Why are you refusing to install service pack three ?

 

I have heard that SP3 and Media Center 2005 do not coexist well and do not want to lose the functionality of Media Center.

 

Try installing it and see whether they do co-exist as service pack three is vital for your computer security.

 

I would rather not spend 10 minutes installing SP3 and then spend 6 hours searching the web and trying to figure out why Media Center does not work or why my computer will not boot.
I have always automatically downloaded and installed all critical updates for XP (which is currently XP SP2. I have no current problems with XP nor Media Center.

 

Fair enough, thats your opinion Try to dismiss the update by not checking it when it asks you what to install.