Steven - 2011-09-08

hi, I am new in Fallout: New Vegas, and after I download the expansion packs: Dead Money, Honest Hearts, and Old World Blues, and put all of them into the "Data" file of the FONV, when I start the game and click into "Downloadable Contents", it only shows the Dead Money, but no sign of the other twos, also when I start playing, I can only play the dead money and doesn't have the Honest hearts and old world blues also, can anyone please give me a hand on this issue? any help will be truly appreciated…