Can somebody point me to appropriate /etc/ppp/peers/... and /etc/chatscripts/... files (and /etc/ppp/pap-secrets if needed) to allow a Debian lenny laptop to tether to T-Mobile USA over an N900
over usb.

Thanks,
Jeff (http://www.ece.purdue.edu/~qobi)

In case anybody else has the same question, here is an /etc/wvdial.conf
file that allows tethering a Linux box to T-Mobile over an N900.

[Dialer n900-over-usb]
Modem Type = USB Modem
Modem = /dev/ttyACM0
Baud = 460800
Init1 = ATZ
Init2 = ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0
Init3 = AT+CGDCONT=1,"IP","epc.tmobile.com"
Phone = *99#
Username = tmobile
Password = tmobile
ISDN = 0

Jeff (http://www.ece.purdue.edu/~qobi)