I've searched online and in threads here on the "can I use an iMac as a monitor" question, and found mostly negative answers. One exception seems to be the 27" model connected via mini-Display Port. However, I'd been hoping to connect an older (G4/DVI) Mini to a new (21.5") iMac, to use the iMac as a monitor. The only semi-hack solution I've seen is to use Screen Recycler or similar software. I have two questions, though: -Can Screen Recycler be used to mirror a desktop, not just extend it? (all info I've seen talks only about extending/2nd monitor, not mirroring). -How's the performance? OK for gaming? I'm guessing this would be a pretty kludgy and/or mixed solution; still, any help would be appreciated. Thanks.