I recently bought the R4 Revolution for my DS Lite. I was however disappointed to find out after I bought it that GBA games were not supported and so I'm wondering, what would be the best and/or cheapest solution for playing GBA games. I'm guessing I would have to get some type of Slot 2 device. I don't need anything else from the Slot 2 device, just want to play GBA games. What's my best bet?