The Geoid files should be downloaded from the following page to insure that you are using the latest files:
Download page for Carlslon Geoid Grid
The Geoid files must be installed in the LSP folder of the program that you are using (C:\Program Files\Carlson Software
2009\LSP, C:\Program Files\Carlson2009_ICAD\LSP, or C:\Program Files\Carlson2009_ACADxx\LSP). Before installing the
geoids, "SurvCom.exe" needs to be copied (NOT moved) FROM the SupTemplate folder TO the LSP folder of the source
program. Once SurvCom.exe is in place in the LSP folder, you are ready to begin the install.
Double click on the downloaded file (CarlsonGeoidGrids.exe) to start the install. Make sure to direct the install path
to the LSP directory of the source program.