We don't know if your machine is infected or not (could be the culprit for the hijacked port 80), so you'll have to visit the Malware Removal Forums and have a specialist take a look at your machine. Instructions are below:
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Consider posting in the Malware Removal forum and having someone take a look at your system. If you decide to have an experienced malware removal specialist assist you, please follow the procedure in this link to run scans and produce a HijackThis log:
After you have completed the required scans and produced the requested logs, start your own thread in the Malware Removal forum, making sure to post the HijackThis log produced from the above instructions.
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