That's right, Lian-Li cases come without power supplies. They're awesome cases, but rather expensive. Still, I don't regret buying mine for a second. I got mine at <A HREF="http://directron.com" target="_new">http://directron.com</A> and I know that <A HREF="http://newegg.com" target="_new">http://newegg.com</A> sells them as well.
This is not a signature.