Cheers awoywood. Looks like Tile Studio could be very handy. Gonna play around with it. No doubt I'll get stuck on something along the way but for now this is great. Greatly appreciate the nudge in the right direction.
Hi, as far as I know there is no extension for that. But you can try Tile Studio here http://tilestudio.sourceforge.net/. As it's name suggest, its a tile editor, and a good one, and free. (Some other developers use mappy http://www.tilemap.co.uk/). Follow the included tutorial and in an hour you will be drawing your RPG game. It includes an export scripting language. If you need help with that or how to parse the map into your app, just let me know. Good luck!