multiple domains

Hi, I have my blog up and running on my own domain: http://www.comandodigital.com/kolleidosonic/. I have several tabs and would like to assign a second domain name to one of the tabs. Currently the address for that tab is: http://comandodigital.com/kolleidosonic/?page_id=2. I would like to change that address to http://www.magabo.com.

How can I do this?

any help is greatly appreciated!!

thanks!