Hi, this is my first time actually needing to go beyond just reading the site and following along--this is my third virus problem in a few years, the first two were resolved easily with Malwarebyte's Anti-Malware. The computer is a Dell Laptop, it's a few years old. (Hey, no jokes! My mom gave it to me, and she's a sweet lady!)
I'm going to be as detailed as I can, although i'm sure there's information I'm leaving at since I've been working steadily on this since last night.
I had the MS Antivirus 2009 program show up on my computer--the virus that puts up fake, intimidating scans, wants me to sign up for their protection and then goes on to mess up my browser. (I use Mozilla Firefox.) It also opens pop-up ads in Internet Explorer.
I ran Malwarebyte's Anti-Malware, and it got rid of the MS Antivirus 2009 problem, but the Mozilla hijack continued. After looking around on Bleeping Computer a bit, I tried another program--SuperAntiSpy--and that got rid of a bunch of infections as well. That's when another version of the fake scan thing started showing up, something called Spyware 2009 Windows. SuperAntiSpy got rid of that as well. I tried to do a system restore to a point when I knew the computer was clear--didn't work.
THE CURRENT PROBLEM:
When the computer opens up, the following window appears:
"Error loading nfr.dll
The specified module could not be found."
Also, when I try to go to some websites on Mozilla Firefox, it claims I'm running through a "proxy server"--websites that have decent levels of security won't let me view the page.
Right now, I'm running the program Kaspersky Anti-Virus 2009, which has found quite a bit of stuff already. (I'm doing a full scan that's been running for almost two hours now.)
I had been looking at a page on this site that referred to something similar:http://www.bleepingcomputer.com/forums/t/206164/error-loading-nfrdll/
And that's why I was running Kaspersky Anti-Virus 2009--it seemed to handle the stuff that the previous programs hadn't.
Anyways, any help would be appreciated!