Exploit-MhtRedit.gen

Dear all,

A virus alert message about Exploit-MhtRedit.gen just popped up in my window. I tried everyway, but it can not be either removed or cleaned.

This trojan came in when I downloaded flashget this morning. It was said to be in c:/documents&settings/name/local setting/temp internet. However I can not find this file in my computer.

When I scan for virus again, it says no infectted files. I am sure it must be in somewhere in my computer. Could anyone help me out? I greatly appreciate it.