[quote user="Bill C"]Specifying the GCS name does not allow me the option to select the Vertical Datum. By selecting the GCS from a file, we can pre-define the properties which cannot be set from a key-in.
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I assume you want this so you can batch process a number of files... why not try and build a vba macro from the macro recorder recording you doing all the steps manually then run the macro over a different file to test it works if it works you can now either examine inside the macro and work out the keyins required or just let the batch processor run and rerun the macro for you over your selected files...may not be elegant programing but it works most of the time... if not then some tweaks may still be needed like mdl silent so the dialogs dont pop and wait for data points.. etc.... if you still cant get it to work then repost your macro on the programing forum and ask for advice... lots of good help there...