My 17" iMac G5 (rev. 2, stock configurations) feels a little cramped when it comes to pixel real estate and when using Final Cut Express, and if I were to buy a 20" or 23" Cinema display, could I hook it up to my iMac and have one giant estate of pixel perfection? I'm also planning on upgrading to the mac pro, so I'd have a screen for that already. Would it work? Thanks.