I have a measured drawing for a simple bookcase and the goal is to make all the pieces for the bookcase out of a single sheet of 4'x8', 3/4" thick plywood (except for the back which will be 1/4" ply).

Here's my problem. I have a list of the pieces I'll need to cut and their exact dimensions. What I need is some type of online calculator that will let me plug in my pieces (with their dimensions) and spit out a drawing of all my pieces laid out on a sheet of 4'x8' plywood.

Any suggestions?

Jason