extofer -2 Posting Whiz in Training

i found a nasty trojen that Maxed our upload capacity in out business netowork to the point that NOBODY can use the internet in our network. Unfortuanatly the SERVER has the trojan causing thing problem I found and and Can't find a Virus Scanner to remove it... it's a 2000 server. So I need help to remove it manually. The file is running as a system resource, using 100% of the CPU and maxing our broadband capacity. So I blocked the server IP to access the Internet. The rest of the computers can get on the web now, but I still can't remove the trojan. Any suggestions...
I can't use any Virus Software.... and I can't shut the computer down.
Please help

Be a part of the DaniWeb community

We're a friendly, industry-focused community of developers, IT pros, digital marketers, and technology enthusiasts meeting, networking, learning, and sharing knowledge.