Sure, but first things first.  The USD Monitor computers are, as you note,
old technology, but reliable.  The old technology part is what may cause you
problems.  First, the computers are moderately conservative for their day.
They do not, however, have a graphic loading display and they do not
recognize a caution zone.  When they say you have a deco obligation, believe
them.  If you wish to be more conservative than that, you'll have to add
your own "caution zone" buffer.  As I recall, they use a 60 foot per minute
ascent limit.  Newer computers that I'm familiar with use a 30 foot per
minute ascent limit for at least part of the ascent.  Again, if you wish to
be safer, add your own conservativeness to that of the computer.  Finally,
and the thing that will probably do your computer in faster than anything
else, is the fact that the Monitor computers do not have user replicable
batteries.  The batteries, which may well last as long as 5 years or so, are
soldered in and then sealed with a special jell.  The battery door is simply
a cover.  It is not pressure and probably not water proof.  Look for someone
local who can replace the batteries for a reasonable price or contact US
Divers to see what they can do for you before you make significant other
changes to accomodate your new (to you) computer.

I've got manuals for my USD M1computer around here somewhere.  It's
essentially the same as the M2 except the M2 provides more deco information.
When I find it, I'll consider scanning it and sending you a copy.

The M1 and M2 activate when they hit the water.  They provide depth, time
and no deco time during the dive and will give you enough information to
complete deco safely if you venture into deco territory.  The M2 gives more
deco information than the M1.  The metal "studs" on the face of the computer
activate the computer's features depending on which ones you contact.  They
are contacts, not buttons.  Lick your fingers to improve contact and give
them a try.  The bottom two do one thing, one of the bottom ones and one of
the top ones does something else, etc.  It's been so long since I used mine,
I don't remember what does what.  I'll let you know if I figure it out.

That's all I can provide now.  I'll see what I can do about finding more for
you when I get a few minutes.

Lee

That was easier than I expected.  I did a Google search on US Divers Monitor
2 Manual and came up with the following URL
http://www.aqualung.com/tech_library.html .

If you look under computers, you'll find the manuals for the US Divers
Monitor series, and other, computers.

Lee