Why do you want to use Flash buttons, what is the plus value over the normal buttons or the Shape buttons (in CP6 only)? Or even using the static button widget in previous version, for navigation it will do well and like the Shape buttons it can be used on a Master slide, thus avoiding having to copy/paste it to all slides.
PS Steve, Pipwerks (Hutchison) has a list with variables as well (little bit more complete than Michael's list).
Doesn't sound like you need to involve Flash...and Lilybiri asks a perfectly valid question...you already have what you need--click the button icon to add one to the slide and assign the Action (Go to previous slide...Jump to slide...Continue...etc) to it...is this your first time using or are you just getting your Captivate feet wet?
That is a really good question Lilybiri. My answer would be none.
I have just completed a basic Flash course and experienced how easy it was to create custom buttons and wanted to know how to use them in Captivate. To be honest it does seam like a lot of bother and effort to get them working when image buttons in C5.5 work so well.
I must have a look at the static button widget.
Thanks for everyones responses