The help files provide a good point to start.
(Locations based on typical install of English office)
OWC9: C:\Program Files\Microsoft Office\Office\1033
OWC10: C:\Program Files\Common Files\Microsoft Shared\Web
Components\10\1033
OWC11: C:\Program Files\Common Files\Microsoft Shared\Web
Components\11\1033
Additionally the help can be invoked using [F1].
User Help: Open a page OWC on the page. Select the
control. Hit F1 key
Design Time Help (MSAccess or FrontPage): Open a page for
editing. Select the Control. Hit F1 Key
VBA Help: Add the control to a VB or VBA form. Display the
object browser. Select and OWC object, method, or
property. Hit F1 Key.
There are also lots of OWC examples on MSDN. Start with:
http://search.microsoft.com/search/results.aspx?
View=msdn&st=a&qu=OWC&c=0&s=0
Thx
Dan