Reformatted microSD and now it doesn't work?!

Alright so I have a Kingston micro SDHC card 4gb that i'm using with R4DS. I've been using it for years but yesterday I tried putting the Mario Tetris rom into it and after i tried to turn my DS on, it's just stuck at 'loading' on the top screen. Then i tried to see what was wrong with it so i plugged it back into my computer but it said i had to reformat it. So i did and it erased everything (unfortunately i didn't have a backup of anything). Now i don't know how to re-install the hardware to make the SD card work on my DS Lite.i'm running on vista 64 and sadly i wasn't the one that put in the games in the first place so now that everything's gone, i have no idea what to do! please help! i've done a little research saying i need to go to "http://www.r4ds.me/". but i still have no clue. please please help! :[

I suggest you have a look herehttp://forum.romulation.net/index.php?topic=39701.0There is a guide to help you set up your R4 card using WOOD

If your R4 is able to use SDHC cards then it's not an original R4, so Wood won't work on it.