cups and filters

[D-Man <dsh8290@rit.edu>]

I set up cups on my system with a LJIIIp with a PS cartridge (level
1).  It prints PS just fine, but the printer doens't realize the job
is done.  How can I notify the printer it is done, other than pressing
the "reset" button on the panel?

Also, I can spit plain text out of it (in PCL mode), but it has the
stair stepping problem.  I could specify a mime type for text/plain
and convert it, but I want this setting only for this printer, not all
printers.  How can I specify a filter for this printer only?  Do I
need to learn how to write PPD files?  (the laserjet one that comes
with cups didn't seem to make a difference, and is probably made for
newer ljets)

BTW, Potato (my system) has CUPS 1.0.x

Thanks,
-D