Graphing Program- Help!

[Xen155]

Does anyone know where I can get a grid mapping program. Im not looking for a random generator but something where I can design a dungeon or stronghold myself.

If you do a link or point in the right direction would be great!

 

[Hand of Evil]

DungeonCrafter: http://www.dungeoncrafter.com/

and afree GNU program AUTOREALM: http://autorealm.sourceforge.net/index.php

 

[Xen155]

wow... uber woot to Hand of Evil