Karen,
You can use FTP://codon.nih.gov/pub/nih-image to find the latest version
of NIH imge for the Mac.  Also, you can reach the site at:
http://rsb.info.nih.gov/nih-image

If you need to see the PC version of this program, it was created and is
distributed by Scion Corporation.  Check their web site at
www.scioncorp.com

Al Floyd