Hi thenndral,
You need to use the API.
GetSpanCell will return span information about the specified cell:
http://helpcentral.componentone.com/NetHelp/Spread8/WebSiteHelp/funct101.html
Other formatting is returned by other APIs; please refer to the complete API specifications here:
http://helpcentral.componentone.com/NetHelp/Spread8/WebSiteHelp/webframe.html#titlea.html
Hope that helps!
Regards,
-Sean