something fun to note for SC users, and maybe other as well - I made a program called
Etool that backs up 64k and 4k saves (roundabout method on supercard), and taking a game from a DS card (for example, I tried it with bomberman), backing it up to a SRAM .sav file, then patching the ROM with this new patcher, rename the Etool backup sav file to the same as the rom name (except the .sav part) and you can transfer your save to/from EEPROM and SROM like that... it should even work with the compatible flash cards if you just use the tool to copy the desired EEPROM save to the SRAM and then load the game on that flashcard.