Interestingly enough, hardly anyone is answering the man's question. heh.
He is asking for a 'commmercial' software that can be used in a multi-PC environment with real-time scanning and stuff. heh heh heh

Adaware, Spybot S&D and Spysweeper work great, and they co-exist well. I use all three of them, because.. well about 7 different people use my home PC. They usually end up catching stuff the others miss. Keeps my PC fairly clean, I must say.

Additionally, is anyone following this thread?