OK Here are some other areas for the actual calculations:
[url="http://home.hiwaay.net/~jehle/"]http://home.hiwaay.net/~jehle/[/url] (Goto Download section for excel spreadsheets)
[url="http://www.buildyourguitar.com/index.html"]http://www.buildyourguitar.com/index.html[/url] (Go to /resources/ and /tips/ pages for fretboard SHAPE calculator which ties into the string spacing look as well)
If all else fails ...go to Stewmac:
[url="http://www.stewmac.com/shop/Nuts,_saddles/Measuring_tools/1/String_Spacing_Rule.html"]http://www.stewmac.com/shop/Nuts,_saddles/...acing_Rule.html[/url]
Regards,
Brian