Playing GBA Roms on DS

Hey guys,
I am fairly new to this site, and first of all, I wanted to say thanks to the site managers for keeping it very well organized.
My problem is this....I wanted to get a quick and easy walkthrough on using GBA roms on my DS...Is there anything special I need to do to get them working? Right now, with my NDS files, its a simple matter of extracting them onto my hard drive, then copying them over to my R4 card.....what, if anything, do I need to do with GBA roms? Is it just as simple as using NDS files..extract then copy to R4 card?
If not, please give me a quick rundown on what I need to do.
Thanks to everyone who responds :)

You need a slot 2 card, like the EZFlash 3 in 1. It plugs into the GBA Slot on your NDS. Without it, you cannot play GBA Games.

ive got an ez flash v 3 in 1 and it plays the games alright, but it wont save them, im pretty new to this site and the world of roms, can you please tell me how i can save my games??what is it i need to do??