Converting/Manipulating RPMs for FBSD environment

[Gerard Samuel]

A few weeks ago, I purchased a network printer, but unfortunately, 
I was unable to print to it from FreeBSD.
They (Brother), recently release LPR drivers for the printer, but 
unfortunately, only as RPMs, intended for Linux distros.
I have installed the rpm port, but trying to extract it, gives me an error 
about, being run on the wrong OS.
If there is any documentation/links, that you can point me to, would be great.
Thanks for your time...