I'm working on a project that requires some isometric maps. Asset Forge looks like exactly what I'm looking for but I need to know if it allows me to set up X/Y/Z planes with images. The reason I need this is that the maps that we're building need to fit into specific grid sizes and so we have all the maps drawn out as gridded JPG images. I'd like to be able to set that image, sized in a matching grid size to Asset Forge, so that I can place the different pieces and make sure they're lined up to our original concept maps.

Is this possible?