Depending on what Apple annouces this week, then this may be irrelevant if they
introduce some butt-kicking HTPC system, but if not heres my question...

Has anyone used a PC ATX case to house their old Mac?

I've seen the, rather nice i'll admit, Silverstone branded HTPC cases which i'm planning
on building a media centre with, id rather have a mac whan some PC media centre stuff.

Something like a G4 tower (1.42ghz) board and have a large HD for an ElGato PVR
system, and load if with iTunes, IPhoto and the nice Apps that make the Mac rock