Trojan-backdoor-coworg i need help

[stuveltje]

oke yeah yeah i tapped myself to soon on my back i got most trojans out of the hubbies puter, the puter shows i have internet connection, but it will show an dns error when i try to get on a webpage, it wont get emails in either, what i have noticed is that ...one way or another trojan-backdoor-coworg is getting back in the puter, now the more funnier is ( alhouth hubby doesnt find it very funny)...when i use run and then cmd i get the black box with the cursor leading his own life in it, it will go from the right to the left from left to the right, up and down and i cant type anything there ( looks more like a game try to grab th cursor), when i run the virus scanner it will grab the trojan, but then some minutes later its back again, any help on this one?