There is one within the general 5th Gen RNG questions thread, but I used this one to start with:
http://blazingblyde.tumblr.com/post/4545145693/blyde-rng-guide
I found it very comfortable and easy to follow.
I took a look at the webby, it does say you can't RNG abuse with a DSi/3DS. So I am guessing the only way to RNG abuse for 5th GEN is with a DS/DSlite?
I need a concrete yes or no answer from someone who know. Not a "seems like it" or " I guess so" kind of answer. Because depending on this, I will be buying a DSlite or a 3DS.