Got back from work, have to go to help a friend moving out, so I'll try tonight or tomorrow. Thx for your advices, I'll use your firewalls/scanners you posted in your previous post. Just one thing: ewido had mirc.exe as the backdoor virus (remember, you thought it might be a fake) all along? But I installed that software like half a year ago from mirc's official site... could it be that the file was clean first, but when I ran that new downloaded software last week (that caused all this trouble) it infected files at random liek the mirc.exe file? Because I deleted the quarantine I can't start mirc anymore and I'm not sure now whether to install mirc again...

Thankful for all your help man, you're taking out free time to help people out like this.