I have a DVD copy of Battlefield 2 and don't know what patches I need to install first. The main ones are 1.41, 1.5, 1.51. I don't know if I need to just install 1.51 or what. 

Last time I installed BF2 I couldn't get the 1.41 patch to work with my earlier version (1.2XXXXX something something).

If you're playing the game or have been, what patches do I need to install?