To interface with a Win network, you need
Samba. It lets Linux share files and printers on a Win network, and can be configured as a client or a server. It will run over IPX, but I'm not sure what issues you'll run into there; check the documentation at
samba.org. Also, do a search at
Google using the key words "samba" and "IPX" (no quotes, of course). Chances are that your distro's installation CDs came with some version of Samba.