bob you stated: 'I ran SPS2 on my Sparc Ultra 5 (with parameter data from the SPS validation information), and it crunched all the data on disk 16 in 8494 seconds (80 images at 106 seconds per image).' would you please elucidate . . . . first of all what is sps2 and when you say crunched, what specifically do you mean by that ? what did you get in the 'crunch' ? jamie