So, Malwarebytes was detecting 2 trojan.agent items tied to c:\windows\svchost.exe. When I select to remove it via Malwarebytes, it tries to remove it, but after rebooting, the windows\svchost.exe file is still there, and a Malwarebytes scan detects it again. I took my computer to an IT guy/friend and he downloaded Kaspersky Anti-Virus 2013 - ran the scan - and it deleted the virus. We also deleted Malwarebytes and SuperAntiSpyware so that the virus would not attach itself to those programs. Is there anything I can do ensure that the virus is definitely gone? Thanks for your help.