I need to lose a lot of weight?

I'm currently 5'8" and weigh about 250 pounds. i really don't look it though ( a href="http://i16.photobucket.com/albums/b32/sara62891/me.jpg" rel="nofollow"http://i16.photobucket.com/albums/b32/sa…/a ). anyways, i want to join the military and need to get down to 169 pounds. can anyone help me come up with a regimen? really, i'll do anything.