It's nearly done. My excel sheet for creating WOIN races based on the Racebuilding engine should be completed soon. Only thing left to do is work out the skill costs formulas and add another sheet to populate in the proper format.
I just emailed you an Excel file and an OpenOffice file. Haven't had a chance to see how well the .ods version works. Interested in hearing your thoughts.
The Racebuilder Engine Worksheet is complete. Download it or make a copy and run it through its paces. There's bound to be a few formulas not producing proper costs. Let me know about any issues that pop up and I'll try to get them fixed.