I am currently using an 8 GB micro SD on my SuperCard DStwo and its close to 7 1/2 GB. A friend of mine recommended that I use this program to trim the "fat" of the NDS and GBA roms. I have just two questions before I go through with this process. 1. Are there any Nintendo games that are affected negatively as far as multiplayer and other Wifi functions go? 2. What exactly is removed when you trim a rom, is it just dummy files that are filed to meet the space requirement on a cart like they do with Wii game disks?