[AccessD] C# automation of office

Does anyone have a good information source for automating office (specifically Excel) from C#?

I have a spreadsheet which has code inside of it which pulls data out of SQL Server and dumps it 
into pages of the spreadsheet.  I WAS using Access to do this but my Office 2007 install broke my 
forms (event properties no longer wire to the code behind form).  Thus from C# I need to cause a 
spreadsheet to open, call a method of the code and pass a server / database string to it.

Any help will be greatly appreciated.

-- 
John W. Colby
www.ColbyConsulting.com