Can't really help that much but the M3214 sounds like a Seiko Instruments
model number.  I've just spent about two weeks on the net trying to find
data sheets on LCD modules and haven't had hugh amounts of luck, try farnell
you might get lucky.

The 4x32 display sounds similar to one a friend was using, I'll check with
him and get back as soon as I can, email be if you don't hear back in the
near future.

Sorry I could be more helpful.
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Wayne Bennett
Griffith University
Brisbane Australia
w.bennett@sct.gu.edu.au