http://www.dealtime.com/xPF-ProLine_6100
state a few things about the router you have. that is not a aDSL modem, but a aDSL router as it provides both DHCP and NAT plus has some kind of firewall built in.
it runs off of PPPoE and or PPPoA so you will need to contact your ISP, odds are level 1 techs will not have the information you need. you need to know a few things:
1. what type of encapsulation are they useing PPPoE or PPPoA are the 2 options for that router.
2. what are the settings to go along with that encapsulation (standard is 0 and 35, forgive me i forget the names those 2 settings are labled)
3. you will need your username (most likely something like
username@isp.net/com) and password
4. you will also need to know if you are on a static IP, or on a Dynamic account (DHCP account)
5. you will need to know the settings in the router as well as the subnet to see if it can be used as a true router or if it is locked down to 1 LAN side IP.
6. for roughly $10 you can buy a NIC and get rid of the USB port option as mentioned above a 10/100 NIC will be light speeds faster then USB 1.0. the NIC will also make the connection easier to manage in any OS.
good luck.