First off did you type in a valid site...like www.Google.ca if you did and it comes back http//:?%!!www.Google.ca then you have a Trojan download http://vil.nai.com/vil/stinger/ and run this program it will get rid or fix your comp if you have a Trojan (be sure to turn off system restore before doing this because the trojans like to sit in your driver folder so they keep coming back :)
You need to run these 5 essential steps to remove all the spyware on your computer.
1. Run Deckard's System Scanner (DSS)
2. Run Malwarebytes Anti-Malware
3. Run the anti spyware removal programs spybot
4 Run Superantispyware
5. Run a complete scan with free curing utility Dr.Web CureIt!
Install threat fire which will enhance your antivirus protection