Poste same node on two drupal site using xmlrpc

I’ve tried googling this but with no look. I saw some examples, but they were very confusing. What I want to accomplish with xmlrpc :

Post node 1 from Drupal 6 site www.exemple.com

to

to Drupal 6 www.another.exemple.com

On www.exemple.com, a key was created for www.another.exemple.com

On www.another.exemple.com, a key was created for www.exemple.com.

I would need a simple, but detailled exemple how to do this.

Thank you,

Denis