Originally Posted by KRosh

To turn off Windows XP System Restore FIRST

Click Start > Programs > Accessories > Windows Explorer
Right-click My Computer, and then click Properties.
Click the System Restore tab.
Check the "Turn off System Restore" or "Turn off System Restore on all drives"


now .. start > run > msconfig > boot INI tab > choose safeboot with networking

reboot

Run Microsoft Antispyware


If this does not help let me know I will give you some other options