First of all spybot, spyware doctor, yahoo anti-spy and ad-aware have nothing to do with your problems with Add/Remove Programs. Really depends you are trying to remove, maybe the program you are trying to uninstall is corrupt in some way, maybe u tried to remove it manually? If this actually turns out to be the problem you can download some Registry Edit program or use run and type regedit if you know what you are doing. There are programs able to edit these Add/Remove Programs. You have not given enough information how your windows update is not working...so i can not help you there.