MN65 autostart on WinCE4.2/WinCE5.0 ?

Please everybody i really need help!

I have three gps who has winCE4.2 and WinCE5.0. Its Navmans and packard bell and so on.
I now how to unlock them and start the MN6.5 truth FileManagerCE but i dont want it that way, i want it to autostart direkty from SD card.

I put the core files with maps on the root av the SD card, the exe files name is autorunce.exe but it just dont get started :/

What should i do?

thanks