I recommend avast in lieu of Norton
http://www.avast.com/ It is free, and uses less ram than Norton. You only have to register then they send you the product key via email. I install on windows computers and it works great.
For the processes, you should look for your own processes (Rob and hallie or whatever I can't remember
) Type the name of the processes in Goolge ie: Limewire.exe and see what program responsible of the process, you should be able to cut the crap by desinstalling the programs that you don't use.
Bonne chance