> Can you pls tell me how I can configure my kernel to add in usb modem
> support?
Try `man umodem' and it will tell you that you need
     umodem* at uhub?
     ucom*   at umodem?
This man page also references ucom(4) where you can read that the
devices are called ttyU?.  These devices are made when you run
MAKEDEV in /dev.

You can also look in the GENERIC config file.

	-- Lennart