Looking into getting a G4 (White/1GHZ/1.25GB RAM) to use as a file server that would be hooked up to my Airport Extreme but I'm not sure how this all works exactly. Things I'm looking at: 1. Power consumption - I'm not planning on turning this off. I've read on here that this is much less of a power suck than the G5 but if I left it on, will I see significant increase in electricity bills? And how noisy is this? 2. Reliability - Given the age of these machines, how reliable are they? 3. PCI SATA - Read on here that if one was to do this, they should buy a PCI SATA card and load up the RAM. Can I just buy any PCI SATA card off eBay or is there a specific one I need? 4. Speed - I'm assuming I can just plug this in to my Airport via Ethernet or USB? Not sure which would be faster. 5. Configuration - Not sure what I'm supposed to do in terms of OS. Is there anything in particular that I have to do so that it will just act as a network file server? Will there be any problems with this thing communicating to Lion and Snow Leopard Macs? I don't plan on having a dedicated monitor for it, only for initial setup or the odd time I should need to power it back up or change something. If someone could give me tips as to how to make this the best server it can be and provide some insight to my questions that would be awesome! Also the machine I'm looking at is $60, not sure if that's a good deal or not.