Go to start-run and type 'regedit'. And then navigate to hkey_local_machine>software>microsoft>windows>current_version>Run and delete all the unnecessary items.
Make sure that u dont delete the AntiVirus Program by deafult....as well as the "Power Profile" for WinXP.
Lemme know if that helped!
"When Life gives you Lemons, eat 'em raw"