My Copy of Jedi Knight II doesn't have multiplayer.
I just bought the game along with 4 others in the "Star Wars: Best Of PC" game bundle. I started playing the game in Single Player and having fun (I played the game before 3 years ago at a friend's house.) I didn't know there was a multiplayer mode until I read it off the internet. So I started the game, looked around, and found that there was no multiplayer option. So, I searched on google and downloaded the 1.04 patch (I think it updates the game, not sure,) but I cant find out how to install it. I save it to my desktop and it says it can't find an installed copy of the game. I save it in the game's main folder and it says I don't have permission to save it there.
I have Windows Vista if that has anything to do with it. Please help. I can't find anything about this in the FAQ.