🚀 go-pugleaf

I recently got a PS cartridge for my HPLJ III, so I am beginning to 
explore the PS world.  

With the HP in native mode, I am used to using several utilities
for dumping ASCII files.  One of my most used is LJBOOK by
Vern Buerg, which prints two-up and two sided (it prints one side
of all sheets and you put the paper  back in the hopper for 
printing the other sides.

Is there a utility that does this for PS files?

Or is there any utility that will print out a PS document double
sided, by the same method?

Finally, is there a good, intelligent spooler program for PS
files, that runs under DOS, and has some of the above facilities,
or lets you print just such and such a page, and so on?  Preferably
public domain or shareware?

What do y'all use?

Dominik