Remove the steering wheel column surrounds first, should be 4 or 5 screws on the underside. Should come off in 3 parts (top, bottom and key surround)
then as Evesdropping said, pull out ashtray, and remove the section surround gearstick. The rest is all clipped in (atleast 6 from memory), just jiggle or gently pry with a screw driver till all are removed.
Next you will need to unplug all the plugs which are attached, simple enough just hard to access but all you do is push sides in and pull off.
Once you have done this you will have access to the gauge cluster, 4 or 5 screws from memory (some are hidden pretty well)
Remove plugs from the back of the cluster and pull cluster out onto a table, that should be all, just replace LED's, test they are correct position then reverse the steps.