NetBSD doesn't yet support SMP.  some work on it is ongoing, but it's
in the very early stages and the people working on it want to keep
their heads down and make forward progress rather than keep answering
questions about how it's going.. :-) 

as with all unfunded free software projects, asking about schedule is,
well, unlikely to give you useful answers because the people working
on often have no idea how much time they'll be able to put into it,
much less any idea how long it will take them.

However, NetBSD should work on the system (just not using the second
CPU).  1.6GB of memory *should* work in -current; if you have an
opportunity to try a -current boot floppy on it, it would be useful to
see if it worked and how far it got; please report any problems you
encounter along the way with send-pr.

						- Bill