I use DBD::ODBC to connect to MS SQL Server 7 from WINNT to WINNT.

No problems here.

However, as httptech said, you will have to get the ODBC driver for your platform.

Here's one possible source:

http://www.easysoft.com/products/main.phtml

I really don't know how good this product is but a colleague of mine pointed me to it afew days ago.