BUGCODE_USB_DRIVER on tethered SmartPhone.

Hi,

I configured an accociate's Dell Inspiron 1501 laptop with the intent on
connecting a Cingular SmartPhone 2125 (Windows Mobile 5) via the phone's
native "Modem Link" software (aka "tethering via USB cable"). Basically, you
create a "Dial-Up" connectoid in XP with a special phone number, start the
Modem Link software on the phone, and then make the "Dial-Up" connectoid
"dial" the phone. You then have access from the laptop to the internet via
the phone's EDGE service.

Before the Dell, they successfully used Modem Link on an old AMD K6 300 NEC
laptop. The new Dell is running XP Pro SP2 (ie. a bare XP SP2 installation
with only critical updates installed: no antivirus, antispam, no 3rd party
software whatsoever). The Modem Link software works for about 3 minutes (they
have internet connectivity) and then the Dell laptop bluescreens with:

Bugcode_USB_Driver
Stop: 0x000000FE (0x00000005, 0x89BCB080, 0x10024387, 0x89C61F90)

In the context of "Stop: 0x000000FE" , my research shows that 0x00000005
means:

"A hardware failure has occurred due to a bad physical address found in a
hardware data structure. This is not due to a driver bug."

Could someone explain to me in a little simpler way (if at all possible)
just what the above paragraph means?

I'm trying to determine if the problem is in the USB chip set in the laptop,
or a problem with the USB tethered SmartPhone.

Thanks,
Bret