You haven't provided very much information. In turn, I only know to suggest the following tools:
A-squared Free 4.5
F-Secure's Online Scanner
Also try running a "Complete Scan" in Safe Mode with SUPERAntiSpyware FREE VERSION for Home Users.
Best of luck..
Does anyone know how to remove this trojan? My computer is an emachine and I am currnetly running Internet Explorer 8.