Disregard that last post...
it doesn't change the error message, it just mean that instead of starting all the normal processes, (like explorer, it'll just start whatever program you put there).
I left the post intact though, because this is great if you literally just want a web browser or something to be launched...
I chose solitaire,
when you logon the blue logon scren just stays there, when you press copntrol alt delete task manager comes up, and you finally see the desktop...
no icons, no start bar... just solitaire sitting in the background!!