Is it just .DGE files you need help with.. Or others as well ?
For in-built Emulators you may already know..
Each game rom need to be in their appropriate folder (ie) Neo-Geo files put inside Neo-Geo folder and just click.. the rom to start game.
For .DGE Roms..
you must put in the root folder.. in there own named folder..
(DO NOT CHANGE THE FOLDERS NAME FROM DOWNLOAD
) .. also do Not rename the (whatevername
.dge) file also..or they will not work.
open the unchanged name folder from root and find the DGE execute file in the folder and click on it..
I hope that helps.