Foot Pains? What does pain in the middle arch of my foot mean?

I have foot pains in the middle of my foot (NOT IN MY HEEL) it’s more toward the arch. It hurts when I first get up in the morning, then after being on my foot for about a half hour, it stops hurting. Then after walking for about 2 hours of walking, my foot hurts [...] http://bit.ly/pAOGrq