Need to unlock the Symantec Antivirus Live Update from an XP Computer. Here is the little registry edit to help you do updates when you want to do them.
It doesn't remove the old schedule, but it does help you update your computer when you want to.
start/run/regedit
HKEY_LOCAL_MACHINE\SOFTWARE\INTEL\LANDesk\VirusProtect6\CurrentVersion\PatternManager
right click on LockUpdatePattern and change value from a 1 to a 0.
That will unlock the live update button.