Ok I followed the steps you left and here is the logfile. Malwarebytes' Anti-Malware 1.41 Database version: 3045 Windows 6.0.6002 Service Pack 2 10/27/2009 10:41:22 PM mbam-log-2009-10-27 (22-41-22).txt Scan type: Full Scan (C:\|) Objects scanned: 232720 Time elapsed: 1 hour(s), 7 minute(s), 55 second(s) Memory Processes Infected: 0 Memory Modules Infected: 0 Registry Keys Infected: 0 Registry Values Infected: 0 Registry Data Items Infected: 0 Folders Infected: 0 Files Infected: 1 Memory Processes Infected: (No malicious items detected) Memory Modules Infected: (No malicious items detected) Registry Keys Infected: (No malicious items detected) Registry Values Infected: (No malicious items detected) Registry Data Items Infected: (No malicious items detected) Folders Infected: (No malicious items detected) Files Infected: C:\Users\LEON&M~1\AppData\Local\Temp\low\COUPON~1.DLL (Trojan.BHO.H) -> Quarantined and deleted successfully. [5268667939808340707970837468354148091810013986796885748079]