Maybe you already did, but look at the modem and see if it has an Ethernet port on it. Sometimes you get modems with both USB and Ethernet on them.
The trouble with USB modems is they require drivers which can lead to stupid situations like you update your operating system then find you can't use the modem.
It might also help to provide the full make/model of the modem.
Last edited by arizonagroovejet; 02-03-2011 at 02:10 PM.