i want my pc ro run better during games, browsing the internet, etc.
If your having problems simply browsing the internet, I would suggets it is time for a good clean up of windows. Your pc should have no problems with stuff like that.
As was suggested earlier by farlex, using ccleaner, defrag or a full reinstall of windows.
Overclocking will get the most out of what's there, but you don't want to be towing a caravan full of unnecessary crap as well.
Personally I do a full reinstall every six months, I simply reload the first image of my hard disk after xp install and mobo drivers. This keeps windows and browsing nice a crisp.
Then look to get more out of your system for gaming with overclocking.
Tye