QUOTE(hazelnut @ Apr 3 2007, 11:47 AM) [snapback]67393[/snapback]
Off the top of my head I cannot think of any software that you have to keep minimized in order to still be protected.
I think what you want to know ksfinn is if software has "real time" protection. I'm sure your probably using an AV, so you notice that it added a icon in your system tray(bottom right corner). That is one way to know if your software is offering real time protection(most programs do this, not all). The other way of course would be to bring up the task manager and see if it has any services running in the back ground.(alt ctrl del of course.

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There are only 3 free real time scanners that I know of:
Spybot(its called tea timer)
MS Defender(crap, don't use this)
Spyware Terminator(some like it, I don't)
To be honest though I think your better off just scanning every now and then with your programs and not using resident/real time protection. The reason for that is they can slow down your system especially if you use multiple ones on top of your AV and firewall.
Spyware Blaster is great because it will add some sites to be blocked without needing to be running all the time. So it will not slow down your pc at all.