Just an FYI to all of you out there who may have these two dictionaries. Do NOT upgrade to Lion if you use these dictionaries regularly, as they are not (yet) compatible with Lion. Apple made the decision to end Rosetta emulation for support of PowerPC binaries with the release of Lion, and thus only Universal Binaries are supported. NTID has been in touch with me very quickly, and is shipping the newest version of the CD in hopes that it is compatible with Lion, but Gallaudet has not responded to email inquiry about the change.
These two video dictionaries are among the best available, so I truly hope they both port their programs to Universal Binary format so that Mac users can continue to enjoy great access to ASL dictionaries.