No offense, and please don't take this the wrong way, but:
For someone who is clearly not listening to anyone on the forum with their (quite possibly) expert opinions and who uses Norton as a virus checker - I really don't think you need to play around in the registry. You can (AND WILL) screw up your computer.
Like everyone else has been saying, find something other than Norton as a virus checker, and don't even bother looking int the registry. I assume you want to play in there to make your computer faster? If so, Norton is probably the problem.
As for me, I've had machines running Vista, 2003, XP and 2000 all without virus protection for about 8 years now and the ONE virus I got I was easily able to get rid of it.
The main points to remember:
- Don't ever download an EXE from a pr0n site
- Be VERY wary of keygens
- Don't install free screensavers or other crappy software.
And if you want to do a check on your system, I cannot recommend
HijackThis enough. It's a great piece of software that scans your PC and gives you an output file that tells you everything that's running. Then, simply stick the log file in an online parser (
here) and it'll spit out a report on all the things, their danger level, what they are and what they have been rated by the community