Mssr.Byrne Hobart, thank you for an excellent link. Your blog is also quite good. I'm going to have to dig around more. Having played with the actual Excel sp

Mssr.Byrne Hobart, thank you for an excellent link. Your blog is also quite good. I'm going to have to dig around more. Having played with the actual Excel spreadsheet, this seems like something that probably could have been done with Mathematica using less horsepower...or am I missing something?