Digital BW, The Print

I have a shot of a very dark space illuminated with one very bright 
light which Silhouettes several figures very effectively.  It was 
taken on Super XP-2 and scanned with a LS 2000.  The problem is that 
given the underexposure of the dark areas there is a good deal of 
grain/noise present. While some certainly adds to the atmosphere, I 
would like to tone it down a bit.  Can anyone suggest a way of 
filtering out some of the noise/grain?  I have tried most of the PS 
noise filters, but to no avail.

I scanned at 16 bit and did the curves adjustments before going to 
8bit.  Would there be any advantage of converting back to 16 before 
printing??   I use a 1200 with the MIS VM inks.

Steve