btw...if u r using win xp sp1, ur auto update files will be stored in c:\program files\WindowsUpdate\
the windowsupdate folder is hidden and u wil have to check the Show All Files in folder options to access it...and the update files will be visible as .exe files only after they have completely downloaded (its .bac files when they r not completely downloaded....
and whether u r using sp2 or sp1, copy all the files to some other folder before u install the updates...coz after the installation, they get deleted...