No internet

Hello all,

I had cleared some malware and such using this forum, and after installing online armor and avast, I decided to run combofix just to make sure thigns were still clear...however, when I did my computer kind of went on teh fritz as I forgot to turn off the firewall and anti-virus software. I got a system notification saying I had a trojan file that was deactivated, and asked if I wanted to delete the file, I tried clicking yes, btu I don't know if it went through. Meanwhile my firewall is asking if I want to all a bunch of things to run (I'm guessin gfrom combofix). At this point, I had lost internet, and since then haven't been able to get it back. After taht I uninstalled avast and online armor and comodo to see if thre was a conflict, but that didn't help. It just displays the 'acquiring network address' thing.
Now my computer won't finish loading after signing in unless i press the power button (just quick, not enough to restart it).
I saw what a ndetect.exe or ntdetect.exe in my C: drive, which I didn't remember being there, however moving it to the recycle-bin (just in case, I woul dahve resotred it later if it were good) made it so my system couldn't start with a ntdetect failure message, which is weird because I thought that was a .com file that did that. Using ubuntu I had the ntdetect.com and .dll file copied to my C: again and then I was able to boot (although I still had those files in i386).
Anyways...there is still no internet, and I don't have a solution. Any suggestions?