For backbone, please refer to CAADoc/Dialog.edu or something, there is a good sample inside. search with "CORBA" may make it easier to find the source.
And of cause you have to also give a good read of the section Backbone in encycropedia.
For socket, you can refer to any network programming related book.
Don't ask sample code from me, I don't have. Actually nobody have such a good sample just fits your needs.
