ActiveX - can u help me please?

Hello, i'll apreciate if someone can help me with this: I have a virus on my pc, and my mcafee doesnt catch the virus. I try to run a online virus scan and cant, i suspect thats because the ActiveX controls. I do that: Set Internet Explorer's security level to Medium. The ActiveX controls needed for the BitDefender Online Scanner are blocked if the Internet Explorer security level is set to High or a custom level based on it. The Medium security level allows safe browsing while maintaining most functionalities. To set the security level: Open Internet Explorer. Select Tools, then Internet Options. Click Security and select the Internet Web content zone. Click Default Level. This step is required for customized security levels. Move the slider to Medium. but doesnt work!!!! Help please

download HiJack This here and scan but do not fix anything yet. Save the scan to a log and then post your log in the Hijack This logs and problems forum here