anti-spyware? how do you mean ? ad aware scans for spyware and removes it so does spybot, windows defender etc all worth having.
If by anti-spyware you mean to help protect from such things in the first place id recommend:
Spyware blaster (stops hijacking of your browser and blocks spyware):
http://www.javacoolsoftware.com/spywareblaster.html
Spyware guard (real time monitoring for suspicious behaviour):
http://www.javacoolsoftware.com/spywareguard.html
Winpatrol (real time monitoring of registry changes and suspicious behaviour):
http://www.winpatrol.com/download.html
Although even though these programs can stop spyware, It is worth having these spyware scanners:
Ad aware SE:
http://www.download.com/Ad-Aware-SE-...bj=dl&tag=top5
Spybot:
http://www.safer-networking.org/en/mirrors/index.html
Advanced Spyware Remover:
http://www.majorgeeks.com/Advanced_...over_d4977.html
Windows Defender Beta 2 (need real copy of windows to work)
http://www.microsoft.com/downloads/...&displaylang=en