Veronica - congrats on your engagement!! How exciting!
Get your DF the Being a Dad DVD. I got it for DH for xmas, at the end, they show a baby coming out. DH watched that bit heaps. Otherwise, at your antenatel classes, i assume you will watch some videos etc, that should give him the idea.
Me, on the other hand, my DH loves those real life medical shows. I cant watch them, have to cover my eyes (and ears) at times. I told DH that, if i have a CS, that, by no means, is he to have a look, cause i reckon he would love to check it all out.