Deleting files and needing arma 2 BAF and PMC?

[comc909 0]

Help! I recently bought arma 2 and arma 2 OA.OA is a disc and arma 2 is through steam but every time I try to join a dayz server with dayz commander it says I need arma2 PMC and BAF to play then when I get into the game it says I need to delete OA files to get an access code? Some help on this would be nice.Also if I do need to buy the other dlcs would mind telling me now so I can buy it while its on sale on steam.

[AmberHelios 2071]

if you have retail i dont think the dlc works with steam and retail but you should have the lite versions already installed

make sure you down load these

http://www.arma2.com/index.php?option=com_rokdownloads&view=file&Itemid=20&id=803%3Aarma-2-combined-operations--operation-arrowhead--reinforcements-patch-1〈=en

http://www.arma2.com/index.php?option=com_rokdownloads&view=file&Itemid=20&id=777%3Aarma2-patch-1〈=en

and enable the lite versions of the dlc in expansions menu of oa