generic post processor downloads?

Hey guys...the shop where I work at just bought an old Gidding and
Lewis vertical turret lathe. I've been using mastercam for several
years for milling..but have no experience in drawing/programming for
lathes...Can anyone tell me if there are any sites with generic post
processors? I can't find anything even close in our mastercam files.
If necessary, I suppose our shop owner can pay somebody to make a
custom post process...just though I'd see if I could make it work
first. Thanks..Dave