take all the switches out by pulling them out carefully. sterio out and pull the heater switches and heater control surround out.
unscrew all the screws you can see. there are about 6 i think and 2 above the clocks.
now the dash surround should come out.
To take the clocks out just unscrew the two screws holding them in place.
tricky bit is to get your hand behind the clocks and clip the speedo cable back in place. if its worn then replace it
thats about it really

now clean the stuff while your at it and refit
