I solved my white screen problem. I was using the files for the wrong R4i Card. Why do they have to name them so confusingly? Anyways, anyone with a similar problem, make sure you pay close attention to the exact name of your card.
I used this tool to try to make forwarders for all of the NDS Pokemon games and it worked fine for all of the gen 4 games(Diamond Pearl Platinum HeartGold SoulSilver), but not for the gen 5 games (Black White 1&2). I just get a white screen on the bottom and top. All four work when launched off...