Disconnect your battery first (obvious but essential!!) Then there are allen key screws on the rear of the wheel (not sure if there the same number on each style of wheel but there are 4 on my 95 1.8). Undo these and the airbag will fall forward. Then just undo the wiring, BIG nut and Bob's your uncle! /ubbthreads/images/graemlins/smirk.gif
When you put the airbag back on and are ready to reconnect the battery, switch the ignition on, put your lights on (and maybe a couple of other things that will take some power out of the battery), leave the doors open and then reconnect the battery. If you don't, you could have a rather loud bang as the airbag goes off (voltage spike) /ubbthreads/images/graemlins/frown.gif
Done this a couple of times and mine's not gone off (yet /ubbthreads/images/graemlins/wink.gif)
HTH