I have hit a brickwall in functionality using OWC10 to generate
spreadsheets from the web. So I decided that I'll need to write an
actual C# program to generate the spreadsheet file. I need to be able
to programmatically control Excel2002 and 2003, especialy Page Setups &
Margins and text wrapping. Do I have to use VSTO to get this level of
control or can I use the regular C# api from within VisualStudio
2003/2005 for both versions of excel for use as a desktop application?

thanks for your help!