>2 questions
>
>1. how do i 'SET MAIN' a prg in a project through the command line
>
>2. how can i change the icon of an exe file without playing with the registry?

1.

MODIFY PROJECT YourProject.pjx NOWAIT
_vfp.ActiveProject.SetMain([Newmain.Prg]) && Check SetMain in HELP for more info.

2.
MODIFY PROJECT YourProject.pjx NOWAIT
_vfp.ActiveProject.Icon = [myicon.ico]

or Project Info->Attach Icon and choose Icon you want.