Got some one else to fit mine for a reasonable price what we did was as follows
Use 4 plastic potting sticks (any garden center b&q etc) These are strong enough to flick the catches and pull the unit out a little. Then use something mettalic and thin to leaver the unit out.
Take off the cap at the end of the dash on the passenger side (if mounting in glovebox) This is to
help feed the wire from the head unit
There is a piece of plastic in the glove box (in mine anyway) where a interior light would be snap out half of this to feed the wire into the glove box.
Once connected attach the black cable on the ICE ink to the brown earth cable on the HU cable
there is a good gap at the bottom behing where the HU goes that will easily take the ICE link and stop it rattling about.
Place the end cap back on and put it all back together.
20 minute job tops.
If you are putting the iPOD on a cradle of something I think the glovebox will have to come out as there are no gaps available.
I hope this helps