How to find the properties and methods of an Office Application Automation Object

The MSDN Library is the best place to find the documentation for the object models for the Office Applications.
Excel Object Model: http://msdn.microsoft.com/library/en-us/office97/html/output/F1/D3/S5A341.asp
Word object Model: http://msdn.microsoft.com/library/en-us/office97/html/output/F1/D4/S5A856.asp
Access Object Model: http://msdn.microsoft.com/library/en-us/office97/html/output/F1/D2/S5A021.asp
DAO Object Model: http://msdn.microsoft.com/library/en-us/office97/html/output/F1/D2/S5A25F.asp
PowerPoint Object Model: http://msdn.microsoft.com/library/en-us/office97/html/output/F1/D5/S5AE28.asp
Outlook Object Model: http://msdn.microsoft.com/library/en-us/office97/html/output/F1/D5/S5B056.asp
(When doing automatic emailing, however, remember that not everybody uses Outlook; OutlookExpress is completely different, too. MAPI is a more general way to send an email!)
MS Graph Object Model: http://msdn.microsoft.com/library/shared/deeptree/asp/deeptree.asp?stcfg=/library/searchtabconfig.xml&dtcfg=/library/deeptreeconfig.xml&url=/library/en-us/office97/html/output/F1/D4/S5A856.asp?frame=true


Caution, though: The Object Models change slightly between versions of Office Applications: I usually code to the Office97 object model to try for best backward compatibility!