Firstly, I would advise a scan in safe node with the following, download, install, update then reboot into safe mode:
Malwarebytes Anti-Malware:
http://www.download.com/Malwarebytes-Anti-Malware/3000-8022_4-10804572.html?hhTest=1.
Select Full Scan.
Remove all infections that it finds after scan.
SUPERAntiSpyware Free Edition:
http://www.download.com/SUPERAntiSpyware-Free-Edition/3000-8022_4-10523889.html
Select Scan your Computer, select your drive and select Perform Complete Scan and remove infections, then click on Preferences, click Repairs Tab and click on any of the System and Browser Repair Items that you may have problems with then click Perform Repair.
Use BOTH for maximum effect as they work slightly differently.
Better protection - use Avast anti-virus which better definitions, anti-spyware and anti-rootkit built in, faster and more reliable:
http://www.download.com/Avast-Home-Edition/3000-2239_4-10019223.html?part=dl-AvastHome&subj=dl&tag=button&cdlPid=10852750
Setup Guide:
http://tinyurl.com/5lxy24
AV Comparison:
http://www.virusbtn.com/news/2008/09_02
http://www.av-comparatives.org/
Spyware Doctor Free Basic Edition - Realtime monitoring:
http://www.download.com/Spyware-Doctor-Starter-Edition/3000-8022_4-10704508.html
Download install, update and run.
Comodo BO Clean:
http://www.comodo.com/boclean/CBO_download.html
Simply download and install, follow instructions on screen.
Real time virus and malware protection - stops rootkits,, hijackers, keyloggers and Trojans from stealing your identity.
Go here to see what it protects you against:
http://www.comodo.com/boclean/trolist.html
Spybot S&D:
http://www.download.com/Spybot-Search-Destroy/3000-8022_4-10122137.html?tag=mncol&cdlPid=10861988
Download, install, update and Immunize, turn off Tea Timer then click 'Check for problems' then when complete select all and then 'Fix Checked'
Open Spybot, click on Mode, select Advanced, click on Tools then Resident and untick Resident 'Tea Timer'
Do NOT untick Resident 'SD Helper' as that is your protection.