You will need to talk to your unix sa and request ODBC drivers be purchased/installed.

should then be able to connect to MSSQL, although I am sure it's not nearly as straightforward as using DBI on the unix box to connect to a RDBMS like Oracle via SQL*Net.

I think the answer in the other identical post may have some real merit. Perhaps just do the perl on the MSSQL box via Win32::ODBC, and call it via TCPIP from the unix box, passing delimited data. At least this scenario can be done yourself (with a bit of research) as you can just get Win32::ODBC and immediately connect locally on NT. and you can code the perl on the unix box using TCPIP sockets (lots of code on this site to accomplish that).

good luck, you certainly got an interesting assignment...be sure to post the results of your quest!