Here is the V1 assembly instructions, and here and here are the schematics.
Note that the differences between the base V2.0 and V1.0 are actuall pretty minimal (instructions on how to make them will be inserted here) - the extra add-in stuff can be built in the V1.0 board's proto area. In fact you can use the V2.1 ROM with a V1.0 board if you make this change (it's somewhat safer because the pyro charges come disarmed) - If you want an upgraded ROM then feel free to either down load a copy from this web site (see the sources page) or I'll upgrade your existing ROM on an exchage basis (send it in, I'll reprogram it and send it back).