um...i read on the mini minty news page the your looking for a mmc card. didn't "theotherguy" said he will sent you a 8mb card?
if a SD card works and you really want to buy a card, this site says that they are selling a 32mb SD card for $5.99 and free shipping.
but since it's in Santa Clara, CA. it might take a while.
also this might be a little to late because your news update was 5/10, and you might of gotten a new card already.