My pc was infected from this worm! I tried remove it with tools from Avast but I can’t it because Avast doesn’t find the worm!!! I’m desperate!!! Can you help me, please? 
Try these removal tools:
http://securityresponse.symantec.com/avcenter/venc/data/w32.klez.removal.tool.html
Please, send an email with the file (false positive or infected) to: virus@avast.com
You can zip and password the files… Inform a link to this thread and the password used.
You can send the files to Chest and, from there, resend to Alwil for analysis.
Thanks.
Are you sure that avast does not detect it?
Don’t need to be like this… Why did you logoff from forums and stop receiving help?