spyware quake removel from system

this software is loaded on a computer with xp sr2
and no mater what we do we can not remove it from computer (yes we have admin rights) , we used remove programs in controll panel ,no luck
tried antivirus programs to see if was a issue
3to be exact, tried a number of spyware programs to see if it was an issue , i even tried removing the files from hard drive and registry
manually , i also made sure system restore was turned off , has anyone encountered this program
and been able to remove it ? the website hasn’t return any emails also thanks for any other options