trojan.agent

Please help

I had the antivirus pro virus earlier today which i solved with malwarebytes anti malware. Now when i scan with malwarebytes it always comes back with this one thing, trojan.agent which i am unable to remove. Also when on the internet i keep being redirected all the time to some feedyard site and some other irelavant sites, internet explorer sometimes says it has to close and comes up saying i have to scan my computer and comes up with a page that looks like the my computer window with a scan time bar going up.

Sorry I'm not the most knowlageable with computers. Any help would be much appreciated.

Please download the current version of HijackThis from HERE

• Double click and run the installer.
  
• It will install to C:\Program Files\Trend Micro\HijackThis\hijackthis.exe
  
• After installing, you should get the user agreement, press accept and Hijack This will run.
  
• Select Do a system scan and save a log file. This will open a notepad file of everything Hijack This found, copy and paste it back here.