NT 4 or Linux

It depends.... if money is an issue and you wont' be running server-based applications, Linux wins hands-down. The last NT Server license I bought with five client licenses was somewhere around $500. The last Linux distribution I bought was $19.95USD and can be installed on an unlimited number of servers with unlimited numbers of clients.

Under Linux, you just set up Samba to emulate NT file and printer shares and you're up and running. I have some Linux boxes out at sites where I see them once a year or less (mostly to blow the dust out of the power supplies) and they've been completely stable.

paul