Boy there is a lot of mis-information in that thread.
You do not need an anti-spyware program at all. Just disable ActiveX, set the Java security to maximum, disallow file downloads, and disable scripting. Problem solved. No more spyware unless you make the choice to have it installed.
By default, if you do not setup your security, you are in effect acknowledging it is ok for spyware and malware to be placed on your computer.