which download to use

I am new to this download business and I currently have a r4 sdhc card upgarde for the ds. I am confused as to what the details in brackets at the side of the title means. Can someone please explain and tell me which ones I should download to play on my r4 card? Sorry for being a bit green on this. Thanks

The one that says (U) (J) (E) means bout the Region of the games.
(U) for USA (E) for Europe and (J) for Japanese.As for some names such as (Bahamut) (Xenophobia) these are the names of the person/group that dumped the game.
Is this what you're asking about ?

yes thanks very much