This file can be difficult to remove because it is protected by a driver which loads much earlier than actions taken to delete it. Further, the infection is often accompanied by other .dll files which need to be identified and removed. Successful removal also requires identification of the CLSID (unique id number) associated with the BHO and use of specialized fix tools.
Please follow the instructions here Preparation Guide For Use Before Posting A Hijackthis Log
In step #9 there are instructions for downloading HijackThis and creating a log. (This is a self-extracting version which will automatically install the current version of HJT in the proper location.)
When you have done that, post your log in this forum HijackThis Logs and Malware Removal
, NOT here,