Moving from Joomla to WordPress

First hi! this is my forst post here…
The question is…
I have a Joomla website and I want to move it on WP. So, I don’t want to migrate from Joomla to WP, I want to instal WP on domain where is Joomla and I want to have a link which will lead to my old website.
Is that possible and how to do it. For example my address is http://www.test.com on Joomla and I want to have WP on that address but also keep Joomla for archive so that peole can see site like it was when they click on link.
(yeah, i know i’m complicating things :P)

thank you very much 😉