Thanks to all who responded.. I bought a ATI 4670 with with 1 Gig of DDR3.  (I had a HD2600)  The difference is outstanding.   It did help slightly on rendering but the buggest difference is in posing.  No longer do the figures jerk when moved.  Their motion is smooth.  The Poser dials now work without the usual delay.  Inserting content is much faster.  Apparently my old graphics care was a real bottle neck.

Thanks again
Fred