Yeah, I've been thinking of going the TextBook route...
After taking tons of Masters courses, I've pretty much determined that anyone teaching a 'new technology' (ie, less than 5 years old) that uses a textbook is always going to be dated with their info. For example, the AJAX stuff (advanced Javascript and XML) is only about 6 months old... no real textbooks use it yet.
But... I HAVE browsed through a bunch of course books looking for ideas.
The problems that I'm going to have are:
1) These people are going to be SMART. They'll be experts at googling, and experts at finding data and parsing it together well. Anything that's already out there (and not a new combination of good ideas) is something they can search for, and so wouldn't need me for.
2) This class is going to be a military-oriented course... most of the concepts will be in terms that aren't discussed by the rest of the world. A thousand acronyms that only mean anything to DoD types.
and the most relevant...
3) I guess I'm a bit full of myself in thinking that I can invent a new way of teaching... that goes in the face of a hundred years of experience by people smarter than me.

In reality, I'll probably be given a text book to go by (I haven't even done the job interview yet), and was just looking for some creative ideas that would give me a leg up on my first time teaching to adults.