I have uploaded some maps, but I'm not sure what thread they're in now. I suppose I should start an album!

I played around a little with the above making sure I adjust the document size as well as the resolution, then discovered I don't have to. When I export a BMP from DJ, my version asks for px per cell and creates an image 3200 x 4000 px ( if set a 100px/cell). The resolution is 400ppi. When I open that in PS or maptool, I don't have to do anything other than ensure my grids are set to 100px or whatever the value was I exported the map at. On a fairly basic map, the file size increased by a about 1.5mb (400ppi vs. 100ppi resolution) - don't know what performance hassles I'll get with larger file sizes, but the grids line up perfectly.