C:\PROGRA~1\PANICW~1\POP-UP~1\PopUpStopperProfessional.exe
C:\WINDOWS\System32\??oolsv.exe
= shady entries.
Chances are norton won't find running trojans or whatever.
I suggest : Stop using IE, Use mozilla firefox, get a firewall, and reboot in safe mode then run spysweeper/adaware SE/Norton...