My wife uses it on her laptop and it works fine...it is Norton Internet Security. When you install it you choose the components that you want. I believe that she is only using the AV portion.
My first PS3 just stopped reading discs. Everything else was working fine...downloaded content, internet browsing, and audio streaming were all good, but it wouldn't read any discs. I tried CD's, DVD's, Blu-Ray, and Games, but nothing.
Exchanged it at BB and have had no problems since.
Have you tried PRTG? It's a pretty simple program. You may have to figure out how to make it talk with your PC though...it uses SNMP.
Edit: Solarwinds is also an option.
Rock Band is awesome....
For the lag issues....there is a great write up on the Rock Band forums that someone has put together to get the lag to minimum.
I'm surprised that no one mentioned Lair???
I didn't mind it, but it got horrible reviews from almost everywhere as no one seemed to like the controls.