You need AVG anti spyware, and you need to run it in Safe Mode.
Before attempting to remove malware you must switch off System Restore as back up files will be hiding in there, and it will just restore itself. Go to Start - programs - accessories - system tools - system restore.
Run your anti virus and anti spyware in Safe Mode. To get into Safe Mode repeatedly press the F8 key after the bios screen loads but before Windows loads. You'll know if you made it because the screen will be at 800 x 600 and your pc will be slow.
Then beef up your security. Its easier to prevent malware getting on to your sytem in the first place rather than trying to remove it.
The Windows firewall doesn't stop malware on your pc from dialling out. Zone Alarm firewall is free for personal use and stops unwanted incoming and outgoing traffic. You choose which programs are allowed to access the internet. It's fairly easy to use and updated regularly.
http://www.zonelabs.com Zone Alarm firewall
Shields Up security site;
https://www.grc.com - check your firewall works
http://www.grc.com/optout.htm - grc anti spyware program and info.
http://www.mozilla.com/ Firefox web browser
http://www.opera.com/ Opera web browser
Instal both these web browsers, turn off javascript on one and use that browser for vising unknown websites. They don't support Active X so thats one less way for problems to get on your pc.
Winpatrol is a handy utility that tracks cookies on your pc and stops unwanted changes to your startup folder.
http://www.winpatrol.com
Spywareblaster works with Internet Explorer and Firefox. It won't uninstall spyware that is already on your pc, but it will prevent hijacks and other malicious changes to your browser.
http://www.javacoolsoftware.com
http://www.siteadvisor.com -Site Advisor warns about malware on sites you are about to visit.
http://www.avast.com - Avast Antivirus
http://www.ewido.net - AVG(Ewido) anti trojan
http://www.lavasoft.com - Ad-Aware SE Personal anti adware
http://www.safer-networking.org - Spybot Search and Destroy anti spyware
http://spywarewarrior.com/rogue_anti-spyware.htm - The Spyware Warrior site identifies fake anti spyware programs.
http://www.bitdefender.com -BitDefender can be used as a second, on demand anti virus.
http://www.ccleaner.com Cr*pcleaner Registry cleaner and privacy tool
You can also download Microsofts free Windows Defender from the official Microsoft site, and the Malicious Software Removal Tool.
Remember to update and run all of you anti malware programs at least once a week.