RadioShack USB/Serial converter on FreeBSD 6.0-stable?

[Jaye Mathisen]

Running 6.0-stable as of 8/17.  Bought a USB/Serial converter for my 
notebook from radio shack.  Works under windows, but comes
on as a "ugen0: Prolific Technology Inc. USB-Serial Controller. rev 1.10/3.00, addr".

Is there a simple way for me to make this recognizable as a serial
interface (presuming it's just a rebadged something-or-other.

THanks.