Reply to Expert Moders needed

I've started moding (2 dee's?) my oxygen 8 and i need some more info and i thought this community could help me out.
I want to replace the buttons or the keys with arcade buttons from dj ranking s . I just don't know where to start

this is the keys board
https://www.dropbox.com/s/chjuwsmuz5...2010.48.42.jpg

and the other side of the board

https://www.dropbox.com/s/rtmtth22hn...2010.49.13.jpg

got any ideas on where to start testing?
Thanks a lot every one!

2012-05-03 10.48.42.jpg2012-05-03 10.49.13.jpg