gba roms for ds??

Hey, new to this guys so im learning...i have the R4 and am enjoying the ds roms...i wondered tho as in general the ds is compatible with gba games...will the gba roms work with the r4 on my ds? any info would be hugely appreciated.

Nope, you can't run GBA roms on a Slot 1 flashcart like the R4, you will need a Slot 2 flashcart.

http://www.m3adapter.com/SLOT-2_Series_M3.htmHere are some Slot 2 cards from the nice M3 people down at M3 world.