C
once agian new to this.From what region do i download these ds games is it the US or EUROPE or where not to sure or not to sure if it matters, Thanks again inadvance
T
The DS is not region locked. You can play U, E, and J games on it without a problem, other than understanding the language :)U is the North American release. Almost always is in English, (very rarely you might get a French Canadian dump or something similar due to them being North American as well).
E is Europe. Usually English, as well as a few other languages not included in the U version (French, Spanish, German, Italian, etc.)
J is Japanese. Almost always Japanese, a select handful of games may have English as a selectable languages, but don't count on it.
L
if you are referring to servers, it doesnt matter. In theory you would get better speeds from the one closest to you, but it doesnt always work that way.