Routing Difficulties with Win2k Advanced Server

Anyone try this out? I've set it up with my cable modem, and its working perfectly. EXCEPT, when i try to use mIRC DCC connections. According to the mIRC program, it uses ports 1024-5000. How do i open up my Win2k box to do this? I'm using Win2K Advanced server routing 2 networks. The internet, which is 24.---.---.--- and the local, which is the standard 192.168.0.--- variety. Is there something i'm overlooking? I added input and output filters on the box, but i'm not real good with this... any help would be appreciated. :confused: