[Peterbilt]

I need help with my computer. I have a couple of problems. One is the blue screen on my desktop. I've seen other forums about this, but no way to fix it. It says: "Security Warning, A fatal error in IE has occured at 0028:C0011E36 in VXD VMM <01> + 00010E36. Error was caused by Trojan- Spy. HTML. Smitfraud.c. *System can not function in normal moade. Please check you security settings. *Scan your PC with any avaliable antivirus/spyware remover program to fix the problem."
Also, I have received a box that says: "System Warning. Network fatal error at 00FF:2348AD. Warning! Your internet connection is not secured. Please, use network security software to protect your PC from remote attacks and hacks. Click "OK" to get all the avaliable "Network Security" software." I clicked "OK" and it was just a pop-up.
Another thing is that I am receiving many pop-ups from Internet Explorer, although I am using America Online.
I have used everything possible that I own to try and fix this problem. I've used Spybot: Search and Destroy in normal and safe mode. I have also used Norton Antivirus 2003 with all updates. Nothing seems to work. What can I do?