copying BIOS to a file

I have FREEDOS installed on a partition of one of my old machines.
I also have gwbasic on it. I'd like to write a basic program that will
copy the ROM BIOS of the machine (locations 0xC0000 to 0xFFFFF) to
a file. I think I can remember how to use peek but I don't know how
to write stuff to a file in gwbasic. How is this done? The program
can probably be written in just a few lines. If someone feels like
just writing it and posting it, that would be very helpful. Thanks.
-- 
Ignorantly,
Allan Adler <ara@[EMAIL PROTECTED]
>
* Disclaimer: I am a guest and *not* a member of the MIT CSAIL. My actions
and
* comments do not reflect in any way on MIT. Also, I am nowhere near
Boston.