If you're still interested, you can check out the site I'm developing that draws the wheel for you, allows you to play with all the variables and select different lacing patterns. It may help to visualize what you want before you build it (and even see it spinning).
WheelSpoking.com http://wheelspoking.com/App_Themes/Screenshots/Main-32-2x-0x.PNG
Note: It's still in active development, so don't expect perfection.