Kubuntu and USB to DSL Modem

[Willis]

I have a 2Wire DSL connection and my wife is on a hpna connector through 
the phone line and my Ubuntu unit is connected to the modem through the 
only RJ-46 connector and my windows/Kubuntu unit is connected via the 
USB connection.  My problem is that I am not hooked up to the network on 
the kubuntu through the USB.  If I boot in the XP it all works 
beautifully.  #What must I do to solve my problem and use the Kubuntu 
via the USB connection or is it even possible?