Well here are some real quick ones... first, the export of the world from photoshop... theres some editing i needed to do to get things just right, but since this was already a jpg, i figured its easier then exporting in bryce.
the second is a screen from ArcScene, showing the continent in 3d, blue background just so you see everything better...
and finally, an screen from ArcMap, after i ran the flow direction and flow accumulation tool, you can see the rivers are coming along nicely. Lakes however will be a bit of a question... i'll have to use the flow accumulations to find out where water runs without going anywhere, and basically work out how much water and therefor how high the lake will be...