Avast = junk at detecting rogues (but it's great for everything else). Download Malwarebytes Antimalware, rename the executable, update it, and run a quick scan. If the rogue doesn't let you do that, snag SuperAntiSpywa
re and run that, then try running Malwarebytes. If you have Windows XP 32 bit, grab combofix and run it, if you don't, don't use combofix. If none of that works, grab GMER and scan for rootkits (if you have a 32 bit OS), if it can't find anything and you still have an infection, get UBCD4Win, update the Avira antivir and superantispywa
re plug ins, burn the ISO file to a disc and boot from it. Scan with Avira and superantispywa
re and you should get rid of whatever is on your computer.
If you still can't get it cleaned up, head over to
http://www.geekstogo.com and post in the malware section, they can clean anything and will help you do it for free. After you're cleaned, use either Avast, MSE, or Avira. I would do weekly scans with Malwarebytes and superantispywa
re after you are cleaned, modern AVs just can't keep up with malware and you need secondary tools. If you can stand the pop-ups and annoyances, grab Comodo firewall and defense+ -- if you know what you are doing, it's virtually impossible to get infected with that.
Oh and if you're going to run GMER or combofix, I would highly suggest backing up your important data. Combofix is pretty automatic, but if you hit the wrong button with GMER, you'll screw up your whole computer and need to reinstall the OS.
http://download.cnet.com/Malwarebytes-Anti-Malware/3000-8022_4-10804572.htmlhttp://download.cnet.com/SuperAntiSpyware-Free-Edition/3000-8022_4-10523889.html?tag=mncolhttp://download.cnet.com/GMER/3000-8022_4-10720107.html?tag=mncolhttp://download.cnet.com/UBCD4Win/3000-2086_4-10550208.html
