For those who are interested in running IDS on the Mac, here are some helpful articles about installing and accessing IDS thru PHP on the Mac:

• Mike Abney: Installing Informix on a Mac I
• Mike Abney: Installing Informix on a Mac II
• Antonio Musarra: Mac OS X Snow Leopard: Informix IDS 11.5 + PHP 5.3

Beside these new links (at least they are new to me), there are those existing links regarding Informix@MAC:

• Carlton Doe: Introduction to IDS on Mac OS X
• Jeffrey W. Williams: Use REALbasic to develop IDS database applications on Mac OS
• Akmal B. Chaudhri: Install IBM IDS on on Apple Mac OS X