All or part of the presentation pages can be protected with password(s), even different passwords for different users (the CD is always the same, just the passwords change): the encoding is strong, 128bit secure. You can also forbid print and copy (clipboard copy and also print screen), and setup an expiry date.
The GOLD edition includes direct Flash support, forms, and an internal shopping cart, very handy for distributing CD catalogs (the resulting order form can be printed, faxed or sent by email when the guy has decided to purchase from your catalogue).
No hassles, no configuration files, no browsers are needed: the CD will perfectly work on all PCs, even if a browser is not correctly installed or if they use Opera or Mozilla instead Explorer. You can create a simple custom front end menu as well as a complex CDROM with thousand pages. No code, programming or HTML: you don't need to be a technician. All is visual and the PDF manual is simple and concise, in case you need it.