Please help remove antivirus soft

I have tried Dr.inferno's instructions on removing it and it did not help, i even did it on safe and normal mode just to double-check, but the popups still continue AND 1 thing to add to this is that I never downloaded it(meaning i did not install it). Can someone please help!!!
P.S If it helps i have windows vista 64 bit thank you ^^

Please visit this webpage for a tutorial on downloading and running ComboFix:

http://www.bleepingcomputer.com/combofix/how-to-use-combofix

See the area: Using ComboFix, and when done, post the log back here.

Still with us? If so, please do the following:

Please download DDS by sUBs from BleepingComputer.com or Forospyware.com and save it to your Desktop.

Note: Before scanning, make sure all other running programs are closed. There shouldn't be any scheduled antivirus scans running while the scan is being performed. Do not use your computer for anything else during the scan.

• Double click on the DDS icon, allow it to run.
• A small box will open, with an explanation about the tool. No input is needed, the scan is running.
• Notepad will open with the results, click Yes to the Optional_Scan
• Please follow the instructions that pop up for posting the results.
• Close the program window, and delete the program from your Desktop.