Win32:Gremo

I can’t get rid of this Win32:Gremo virus. I use an AVAST rescue disk, which reports the virus in pagefile.sys. This is the file used for virtual memory.
I turn off virtual memory and delete pagefile.sys. When I turn virtual memory on, Avast Rescue Disk reports the virus still there. Avast Internet Security cannot see this virus.

How can I remove this virus? Thank you in advance

Mark Trainor
marktr30@yahoo.com

follow guide and attach logs. http://forum.avast.com/index.php?topic=53253.0

AdwCleaner
Malwarebytes
OTL
aswMBR

when done, removal experts will be notified and help will arrive later today