well the analysis isn't really the problem, i mean i'm creating a fake world, so i can put whatever i want in it, i'd just like it to seem realistic in a way, not have mountains sprouting out of nowhere just because... while it'd be great to go through the whole process, of continental drift, volcanoes, etc... i'm fine with drawing out my idea of a map in photoshop, as long as i have some program to run erosion and such on it to make it look realistic... i guess the main thing i need is good realistic erosions... since i want to make rivers and lakes using ArcGIS analysis, and that requires the DEM or raster to have a realistic erosion and such (the problem i ran into with bryce is it make a nice looking erosion at times, but its for visuals, not realism, so the river valleys don't always collect water as they are supposed to and you get a lot of small rivers that go nowhere and stop.. mainly on costal regions, where the river would obviously reach the coast, but it stops before it..