Lap steels are fun to build and play
For the first one I built, I started here http://www.buildyourguitar.com/resources/lapsteel/, and expanded on that.
At the time I had just some basic tools, a cheap benchtop drill press, hand plane, jig saw, sander, chisels, etc.
Its more work with hand tools, but it is definitely possible.
For my latest steel, I have since geared up a bit more with a band saw, table saw, thickness planner, and jointer.
Some more pics of the latest
http://i54.photobucket.com/albums/g94/quar...dchambered6.jpg
http://i54.photobucket.com/albums/g94/quar...chambered10.jpg
http://i54.photobucket.com/albums/g94/quar...chambered12.jpg
http://i54.photobucket.com/albums/g94/quar...end/topdown.jpg
Good luck with your project