Black Screen whilst trying to run Call of Duty Games! Help?

Hello everyone, I got a problem. I can't run Call of Duty Modern Warfare 3 Defiance, Modern Warfare 2 and Black Ops on my r4 card. I tried reinstalling it but it just gives me a black screen when I try to load it. Other games work but this one does not.My r4 card has the R4 DS V1.18 kernel on it and on the card it says R4 Revolution for DS(NDSL/NDS).
My Micro SD Card is a 2GB one. I have a Nintendo DS.What should I do? I'm new to all of this and don't understand all anything yet. I'm a Noob who needs help.

Use the Wood firmware http://filetrip.net/nds-downloads/flashcart-files/download-wood-r4-156-f31270.htmlPut the _rpg folder and the DS MENU DAT on your microSD

Do I delete everything else on the Micro SD card or do I just add it on?

Make a back up of your microSD, then on your blank microSD put the _rpg folder and the MENU DAT file and then your games and your good to go

Thx! ;D

Np's, you'll find a load more games you'll now be able to play.