ok, so i can connect fine to WFC at full strength, and can occasionally find random opponents in tetris ds, bvut this is the only game i am able to fine opponents at all..i have tried FFCC:EoT, mario kart ds, AWOR, and a few other games that seem to be popular on WFC, btu i am unable to find opponents if i use worldwide matchmaking or even regional matchmaking for that matter. is there ports i can open on my router to enable me to better find opponents? or am i out of luck?