I might can help alittle.
first you have to know that i cant answer when it comes to DCmod questions.
Which Operativ system are you using ?
Ill take the things step by step.
Try also this scanner
If you want single good free Virus Scanner that i also use on my Jedi-Academy-Duel Server then its this one
( doesnt detect adware or spyware ) but does detect trojan, virus, worms and alot more like phisning and couple of others.
Good luck for now and dont make a new installation yet.