two domain towords one board

[Gandalf]

can i have two domains with the same board like
http://www.mydoamin.net
http://www.mydoamin.org
i know when clicking on any botton the domain will be changed to the default
but is there a way to not change ot if it changes hasn't any effects?

[peterstannard]

one domain will have to be the main one - www.domain1.com/yourboardaddressetc.

and the other one will have to be a redirect so that it points to the above domain.