Can I?

Hey there, Yesterday I got a free creative zen portable media center(http://techdigestuk.typepad.com/tech...tive_angle.jpg)
Its got some kind of windows mobile on it currently but its only like windows media center, and I want more than that, Like running actual applications. So I was wondering if I could install some form of linux on it and how, and what distro.
Thanks
~Alex
Edit: Its got a 20gb internal HD if it matters.

I don't think this is an option as of now at least

Rockbox - Open Source Jukebox Firmware But it doesn't look like Creative Zen is supported.