I just posted, I think in the wrong section. But in short, I formated the card cause it wasn't working and I accedently erassed the main menu so that it can boot up. Now how do get it back? Thanks I am using an R4-SDHC Upgrade, originally the DS lite kept saying something about date problems, sorry can't remember exactly, so I had formatted the card. I must have forgot to transfer the main menu start up with the games now when the DS lite is turned on it just has an icon of the Micro SD card with a question mark. Hopefully this is more discriptive.
Goto the main website listed on your R4-SDHC Upgrade box , Download the latest firmware from there and unrar after downloaded http://www.rarsoft.com/ are unzip it , Place files from inside of the rar are zip arcive onto the root of your microsd chip, replace games and it should work again Root is when the first page open's after puting the microsd reader into your PC , Removable disk (H , H:\ est