Different type of Question about help on Halo 3 campaign?

All right I am trying to get thi acheivment called Marathon Man were you activate all the terminals in campaign mode. I need someone (prefferbibly someone who knows where they are to help me find them. I will give the ten points to the first one who helps me after I get the acheivment. Also it is worth 40g so that would be good also. Volunteers?