Try running a One Care scan in Safe Mode. How to scan in Safe Mode -
http://support.microsoft.com/kb/925222 If you are unable to quarantine or remove the malware by scanning in Safe Mode please contact support for help with removal. How to reach support -
http://social.microsoft.com/Forums/en-US/onecareinstallandactivate/thread/30400b52-7f26-4ba0-bc18-17e305329d90
Jim - MVP Windows Live - Forum Moderator - Live One Care - Live Mesh - Microsoft Security Essentials