The doom3_coop.zip file you have requested: Modifications / Single Player / C to D Titles / Doom 3 Co-Op mod (1.0) - 2.36kb is not available. Perhaps try browsing all files for the game Doom III and upload any files you want to share or are missing. This is the only information we could locate:
None included, to use:Extract pk005.pk4 to your Doom3/base folder, and start up the game. This file allows you to play the Doom3 missions in Co-op mode, which is great for all you mutliplayer fans. A reccomended download for you Co-oppers, or anyone that likes to play with anyone else in mutliplayer.