Thanks to Penn State and Princeton, I now have a version of CARD that works with SFS files under CMS7. I *assume* the new calls I had to use also exist under CMS6, and have coded the program accordingly. However, the result is not likely to be very rejoicing if this is not the case, so I need help from a site with both CMS6 and SFS to make a final test (no account needed - just someone to dump, reload and compare a couple files, it will either work or die fast). Eric