ira,
Okay la....(Singlish)

Your default print/internet server IP is: 192.168.100.1 (unless changed by someone)
and subnetmask : 255.255.255.0
Forget about the port.

Meaning, all your pc in LAN need to have I.P and Subnetmask according to the same protocol of your print server.
All PC in your LAN should have IP start with : 192.168.100.2........192.168.100.X
and Subnetmask : 255.255.255.0

You can also configure your print server to use different IP or to assing IP to your PC using DHCP. Damn this print server is powerfull ( actually it's an internet server)

You can configure this print server using telnet : telnet 192.168.100.1 or
much more easier way, using any web browser and enter this address on location bar:
http://192.168.100.1
If asked for password, just ignore it.

Okay I'll stop here until new question arise from configuring it.

Good luck