Hi Bruce... sorry for long delay in responding. I confess I never expect anyone to PM me and haven't been looking here.
I don't know how you would run Airnav through an EFIS but Dr Paul Boxer at Sentient would help you, I'm sure
[email protected]
I run mine of my laptop and put it through a 5" TFT which works really well. in fact I love it.
The other person you might talk to is Bas who is on this list as he is developing software for iPods and the like http://www.ozrunways.com/site/author/bas/
Hope that is of some assistance
kaz