Is it possible to play GBA games on R4?

I know you must be thinking that I'm an idiot, but I'm just curious if it can or not.Edit: oops i meant if i can put the GBA games in the R4 and play it.

You need a Slot 2 device. Look at gbatemp.net then Reviews for some reviews on the various devices. Particularly take a look at EZFlash.