Available from the usual sources, such as fileplanet (http://www.fileplanet.com/files/160000/164073.shtml)
Coo. A few nice things in there, deathmatch, hotkeys for weapons, more coop maps, improved AI - I particularly like the sound of 'AI teammates will try to avoid running in front of you when you are shooting, if you are close enough.' Not so sure about 'AI teammates are more prone to seek lower covers. They will sit down instantly when taking fire.' "Oh no! I'm being shot at! Better sit down!" :)