Just finished a basic tutorial on creating dungeon maps in 3dsMax that you can print at home and stitch together:
http://doityourselfrpg.com/3d-battlemaps/

Tried to make it as easy to follow as possible. There's also a basic finished sample map you can grab here:
http://doityourselfrpg.com/maps/

I want to do more of these maps. I've been modelling for years so that part isn't a real problem. I find I spend more time designing the map than actually building it. If anyone has any dungeon maps they'd like to see turned into 3D renders you can send them my way.

Cheers!