I have no internet....while online last week on a web site an appication popped up on my screen and instead of hitting cancel, i hit run....It was adware...something called PC..whatever....deleted it but cant connect to the internet now, so it changed something in my firewall and or registery....my windows firewall wont work, tried to do a recover from a earlier date...nope....everything else works fine...is there a program I can buy that will clean the registrey?...or will I have to do a re-format?...thanks, Bill