The ISETLW distribution is a zipped file, isetlwxxxx.zip, where xxx represents the version. Examples: isetlw30b1.zip would contain version 3.0, beta 1 and isetlw30.zip would contain the version 3.0 release.
See the Installation Instructions in ISETLW 3.x Help under the "Setup and Configuration" heading.
Download isetlw30b0.zip (280KB or 286,419 bytes, 06/06/2001 2:28am)