Am I missing something here? If the run time is installed, you can run the .prg without compiling it, in fact I think you can even run a text file if you "process" it!

I frequently write a "preprocess.prg" that will , for example, read all commissions and "adjust" to local business rules which don't fit the main logic in the .exe .

So
IF file('preprocess.prg')
DO preprocess.prg
ENDIF

works like a charm