problem with a USB serial chip device

[bill purvis]

I recently bought a small board with USB chip and cpu on it. This
worked fine on my Windows machine with the supplied driver and 
terminal emulator, but wouldn't work on my Linux system (Mandrake 10.1).
This was one of the main things prompting me to switch to Ubuntu.
According to the supplier, when you plug it in it should appear as
/dev/ttsyUSB0, which it did on Mandrake, but on Ubuntu the only
'new' devices are:

/dev/usbdev2.3_ep00	,
/dev/usbdev2.3_ep02	and
/dev/usbdev2.3_ep81

these disappear when I unplug the device. It should act like a
simple serial terminal.

lsusb produces:
Bus 002 Device 003: ID 0403:6001 Future Technology Devices International, Ltd 
8-bit FIFO

amongst the other devices that I expect.
This seems OK, but how can I get it to set up
/dev/ttsyUSB0 for me?

Bill
-- 
+---------------------------------------+
| Bill Purvis, Amateur Mathematician    |
|  email: bil at beeb.net                  |
|  http://bil.members.beeb.net          |
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