Hey guys - first post so please redirect if necc...

Dashboard bulb gone (illumination bulb) on one side of dash (bulb that illuminates oil pressure, petrol, temp guage etc)...
How do i remove the dash to get to it?
Does anyone have any links to sites that could explain this to me.
I think its a W3W bulb that i need...

Car is a 124 Merc, 1988....

Thankyou very much.