i deleted a decompression bomb, and now my web browser doesn't work.

Ok, so after my last scan i got several messages telling me the this or that file is a decompression bomb. being the stupid impulsive noob i am i didnt read up online to find out what a decompression bomb was & i proceeded to manually delete everything in that list by finding it and moving it to the recycle bin and emptying the recycle bin. one of the files i deleted was in a folder called internet logs and was titled something like tvdebug. it was a zip file. and now suddenly neither internet explorer 8, nor mozilla firefox will open any web pages. my wireless connection is on strong and other applications can still access the internet, such as itunes. even so, no regular browsing seems possible.i re-installed firefox, still nothing. restarted the computer, still nothing. what have i done and can i fix it?