You may run into a problem in that the dlls you mention may be dependent on
other DLLS, of type COM and otherwise. If you have Visual Studio 6, there
are included utilities ("Tools") to tell you if this is true. Dependency is
one thing, Office Web Components may consist of more than one independent
DLL file.
If time is not a factor, then give it a try. Otherwise, the best bet is to
install MS Office. Actually, you may install only one Office product, say
Access 2000 to have
Office Web Components installed on your machine. Also note, your end users
must also have MS Office/OWC installed on their local (web client) machines
to use your application.