a quick search on the forum will find lots of guides
:http://www.z4-forum.com/forum/viewtopic.php?f=34&t=94711&p=1393170&hilit=remove+center+console#p1393170
If I remember correctly you just need to open the arm rest storage, then get a trim removal tool and prize up the centre console from the storage end, then gradually lift it up and disconnect the many plugs! The gear knob can be removed by giving it a sharp yank upwards :lol:
If the gearstick surround is similar to the manual it is possible to get the console off without removing the surround.
With a bit of manipulation it can be fed through the hole in the console.