You would have to convert it to your card type http://www.shunyweb.info/convert.php And rename it to your roms name as they both have to match names exsample zelda.nds zelda.sav
the saves are the regular format .sav so it should normally work on most flashcarts. otherwise use the converter Jhon has provided
The no$gba emu auto compress the sav down to 1kb , you do have to convert it back to a lest 512kb for it to work on a flash cart
Yes you do. They are stored in the BATTERY folder inside your No$GBA folder. A .sav file for every game you've played on No$GBA.
Oh thanksss and another question when i try to add cheats to my friends original r4 and when i try to use them they don't work the game just wont load i remember seeing something involving to big of a file or something im not sure
Keep the chat file under 2mb , or use ysmenu for r4 orignal and have as many cheats as you like http://forum.romulation.net/index.php?topic=27617.0 Are some times its the cheat you are using that will not alow the game to boot...