Can AVG detect all types of viruses? Including Lsas.Blaster.keyloger?

My pc got infected this morning with a worm / virus called Lsas.Blaster.keyloger - I did system restore on my pc to a few days back and everything looks and is running normal but I want to be sure it's really gone. I'm fixing to install AVG software - Should that be able to detect that type of virus, including the Lsas.Blaster.keyloger if it's still on my computer?