If all you need to do is change lightbulbs, you don't need to pull the dash. Just get up under the dash with a flashlight (or better yet, my Christmas gift from my wife was a headlamp, very useful), locate the bulb sockets and gently wiggle them out. Bulbs are very common, Sears, Walmart, etc. If you need to pull dash, the entire dash (metal outer ring and internal gauges) all come out as one piece.
I also HIGHLY recommend plastic polish I bought on Jegs website. My gauge lenses were pretty scratched and foggy. I few treatments with this polish (and a microfiber cloth), and my lenses are shockingly clear...like glass. When I re-assebembled my dash, this was one of the most noticeable improvements.