Congrats on finding that. I'm not sure, but I get several results if I google for "Component Object Model Excel.Application"
Another way to put it - I think you'll have some success if you try to make a Windows app (eg: VB.net, VBscript, C#, etc, whatever you know best) that uses the "Excel.Application" COM API directly, and then see if that maps back well to the Nim library.
