Which software should i use to delete a spy-ware?

 I think all the claims to disinfect a system by the anti- spy ware companies is a myth. Just use windows firewall and make restore point whenever you make some new installation. The restore utility can be found in system tools.
Ans if some day you suspect that spyware has hit your pc, format the drive. no better way than that. It is not pessimistic view, but utter truth.
do the above two things firewall and restore point, you will even be free from the clutches of anti-virus software.
believe me its true.