Bitcrypt malware, help pls

My pc is hit by a vrius called Bitcrypt. It leaves lots of extensions on my pc, like blabla.jpg.bitcrypt , blabla.xls.bitcrypt, how to do fix it. Please help.

Folow the instructions and attach the logs in your next post.
http://forum.avast.com/index.php?topic=53253.0