memory expansion pack

how do i make my r4 recognize my memory expansion pack ?i put the pack there i try to quake2ds and it doesnt recognize !how do i boot slot 2 with r4?
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can somente answear plz?

with rudolphs gba exploader

but i tried and its not working

Have you created gba folder and saves inside that.Apocyliptica knows exactly what to do,he sent me a guide,but I cant find it....

Yep.I've been using a GBAexploader with an Ezflash 3in1. You gotsta put ds games in a seprate file and make save folders.