qmail-masq

Has anybody had any luck setting up the qmail masq.

I am currently using qmail on a FreeBSD 4.8. I have a non-existent domain
on the inside and a regular POP account on the outside. I will eventually
be making the internal domain visible in the future.

I have read all the docs supplied with the tar.gz and I was just wondering
of someone has a "HOW-TO" style why of setting this up. Any help would be
much appreciated.

Thanks

Ben