I dont know if you are infected with a trojan hoarse virus or just a virus, but i can guide you. I do not recommend norton anti virus to anyone, i recommend kaspersky anti virus personal pro 4.5. ZoneAlarm is a great firewall, but some trojan hoarse viruses bypass firewalls because the torjan hoarse virus injects into internet explorer. If thats you case, get kaspersky anti virus personal pro, ulock the full version, update it, and scan your pc for viruses. Also get software that displays what is loading with windows, such as registry cleaner. BE VERY CAREFULL WHEN USING THESE PRODUCTS. Do not remove anything unless you know what it is and make sure that windows does not depend on it, because if it does and you remove it windows will malfunction. I hope this helped, take care!