This is the tool you need,have a look in your local motorstore etc...
http://lasertools.co.uk/item.aspx?cat=278&item=1711The airbag going off is an urban myth so don't worry,just don't turn the ignition on after you have removed the air bag,this is to prevent the airbag warning light coming on.
If you look at your R32 steering wheel you'll see two holes in the back,stick a screw driver in the hole to give you an idea of how the airbag clips work.Now you have this sussed,you need to turn your steering wheel 90 degrees,unclip one side of the airbag,turn it back the other way,the airb should now be uncliped.Turn your steering wheel back straight and remove the key from the ignition.Now pull the aibag off and pull out the yellow connector and place on the passenger seat,use the spline tool to remove the bolt holding the steering onto the car and slide it off.Swap any connections from your wheel into the R32 wheel(this is for the horn etc...)
Put the r32 wheel on tighten up the nut,plug the airbag back in and push it into the clips(be firm),when your happy turn the ignition on and test drive to see if it is bang on straight,and adjust if you need to.