What do you mean you've been hacked so many times?
You don't just click on websites pop ups that say something like "YOUR COMPUTER IS INFECTED, DOWNLOAD THIS TO STOP IT!!!!!" willy-nilly do you? Just blindly clicking "YES" or "download" on web page pop-ups is absolutely a no-no.
I would reccomend a clean format, install a proper firewall via a router, install a proper antivirus, as well as Microsoft security essentials.
Install firefox, ad blocker as well as noscript.
Who knows what has been done to your computer, heck other people might have more control over your computer than you do.