I have this w2000 professional machine, it has to identical 10/100 nics one is connected to a network and get an automaticly assigned ipadress. and the other is connected to an analitic machine via separate ethernet connection how can I make this analitic machine visible on my whole network. ( need to know how to configure routing on it) please help me. but this

Since your running W2k Pro, you will have to use internet connection sharing.

You're thinking of bridging, not routing. ICS would let the 'analitic' (I think you mean analytic, as in analysis, not analitic, as in involving an anus) machine get out (NAT) but would not let it spew SMB and NMB goo into the real network. You couldn't browse that machine, but you could access mounts from real network machines on the hidden box. If you are going to do a lot of masquerading I suggest you get vmware and run an instance of *bsd on the gateway machine under win2k. The time you save on tearing out your hair will more than pay for a vmware license.