Jacobaw96 10 Posted September 5, 2010 Ok i own ArmA 2 On DVD And OA On Steam. First Of all right click your Arrowhead on Steam and click properties, 2. Click Set Launch Options 3. in Brackets Type the Directory to your OA.exe. 4. then a Space, type "-mod=<Directory To ArmA2 (NOT THE EXE)>;<Directory to Arrowhead (NOT THE EXE)>\EXPANSION;ca".... 5. This Is what mine looks like but btw i have A2 On a seperate Hard disk to my OA so thats for the Q:\PF Games thing, You should ignore this and put your Directory. Hope you understand :) - "C:\Program Files (x86)\Steam\steamapps\common\arma 2 operation arrowhead\ArmA2OA.exe" "-mod=Q:\PF(x86) Games\Bohemia Interactive\ArmA 2;C:\Program Files (x86)\Steam\steamapps\common\arma 2 operation arrowhead\EXPANSION;ca" - ... I you have any questions just ask Thanks.... Share this post Link to post Share on other sites