i have an x3 with the mk4 dvd nav fitted

i have got a copy of the 2008 maps with 7 digit postcode search and speed cameras and was wondering how to add them to my new disc which is 2009-1 high maps without these functions

1) how do i make a new iso
2) can i extract them from the other 2008 disc


thanks in advance

p.s love the site