Noob needs help

So I have an R4 Deluxe (crappy piece of flashcart) and I place YSMenu in it (RetroGameFan Multi Cart Update v6.59) and it works fine except that I skipped the 'patch _DS_Menu.dat with DLDI' part so new games still don't work (I wanted to play Kingdom Hearts: Re Coded). So can anyone tell me in step by step (or a link to someplace where I can learn) on how to do that DLDI patch thing with _DS_Menu.dat? Or am I missing something here? Since my DLDI patch gui that I downloaded only accepts .nds files.
P.S. Noobish to this so please forgive me.
Post Merge: [time]1307686700[/time]
Okay so noob doesn't need help anymore. I ended up being able to install YSMenu and updated the infolib and stuff like that but now I get a white screen when I start up Kingdom Hearts: Re Coded. It's obviously not the AP since it only freezes the game when the player hits start. All my other games are working fine so maybe an expert can come save this poor noob?

First thing is to make sure you are not using a pre-cracked ROM, But just a cleanAre you could try my DAT,s sinse i edited two diffrent versions into them http://forum.romulation.net/index.php?topic=43121.msg1291962#msg1291962
Post Merge: [time]1307704918[/time]
Issue solved, last few post!, http://forum.romulation.net/index.php?topic=55532.0