VistaPro
Try the VRLI section of Graphics Vendor A forum. (Go GRAPHVENDA) The
programmers are on-line offering quick and courteous tech support.
There is a converter for DEM to VistDEM, probably available in the
VRLI LIB. You can use a paint program to create a color map for
conversion to DEM, or convert data matrices. I grew up in
Breckenridge, though I'm currently sweltering in SoCal. I really
miss the high country, especially during the hot months.