yes, this is really easy, I added "Import Heightmap" to the menu. There are several parts of the program that need to be updated including the .rc file. The source code uses Mutex's for menu items such as "Import Model". If I get any time, I might show how. If you know C+, you'll have no problems working it out.
Hardware: Dell Precision 490; AMD Radeon HD 7570; 12GB.