Okay, First things first. First:
If you're infected, simply disconnect the computer from the internet and network you're in.
Reconnect only when you're sure that all virus and trojans are out of your PC.
Until there, you might want to use another computer to connect on the internet and ask for support.
Second :
Name of the virus, type, and the name of the infected file.
Also, name of the anti-virus you're using.
Third :
If you really can't remove the trojans and virus,
Format your Hard Drive.
And be more carefull next time.
Also, you might want to try asking for support on others websites, don't forget the name of the virus, type, and infected file(s).