Ok. Forget the DEM maps.. :p After finding the right ones on the GIS 
site (Why don't they link up to google maps, or something, or at least 
provide a "this is my coordinates, what map is for 'this' place?", type 
search at least? Sigh...), I found the data pretty useless, though I am 
not sure what the issue was. It ended up more.. muddy than dune like.. 
Best guess is that the data is inaccurate do to wind storms, averaging, 
or some other issue, which smeared the result, instead of generating a 
clear map. But, what ever the problem, its completely worthless.

So, that leave.. Well, a $150 product called Leveller, which I ain't 
paying for, or Bryce. Only, not really, for Bryce, since while it "does" 
generate dunes as one of its options, it has a size limit of like 
2034x2048, or something, and I need something that can be, refiguring 
the requirements, broken down into something like 256x256 blocks, each 
block 32x32/64x64 in size, or something like 8192x8192 (minimum), or 
16,384x16,384 (max resolution). Bryce produces a result that is a) too 
small, and b) doesn't have enough overall detail (i.e., basically one 
dune, not multiple "dunes").

So, anyone have some algorithms for this, or some free application that 
can do it, or... And lets you set an arbitrary map size, instead of 
being stuck with smaller ones? I haven't a clue how to even attempt to 
do the math needed myself (or the patience to spend a week trying to 
figure it out. lol).

-- 
void main () {

     if version = "Vista" {
       call slow_by_half();
       call DRM_everything();
     }
     call functional_code();
   }
   else
     call crash_windows();
}

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