First off, hello to everyone on the forums. I have only been on Mac systems for about 5 years, so I am glad to be a part of a community that's knowledge far exceeds my own. My friend just gave me a gutted Dual 2ghz G5. It has the optical drive, motherboard, CPUs, and fans. The PCI cards, HDDs, and DDR was stripped from it. The serial dates it to late 2003, which evidently means it uses a PCI-e video card. That's what powerbookmedic.com tells me when I look it up by serial, but when I look at Apple's specs (http://support.apple.com/kb/sp96) it states that it uses an AGP. Could anyone provide some clarification? Also, the machine receives power and the LEDs light up when the power button is pressed on the front panel. That's a good sign, I guess. Below I have included some pics with questions regarding each. I want to get this up and running for the least amount of dough possible! Sorry if they're a little big. Hopefully the forum re-sizes them for an optimal display. The quality is shoddy as they're from my BlackBerry. Can't wait to get my Verizon iPhone next month! I assume these 8 slots are the DDR slots? Knowing that it is only expandable up to 8GB, one would assume you can only put 1GB sticks in each slot? Also, is this 400MHz DDR? These three wires and the open socket behind them troubles me. One appears to be a power prong and the other two have some sort of metal connectors that I have never seen before. Can anyone provide some insight as to what they used to be connected to and what plugs into the socket on the board? I hope this wasn't the cooling unit or something important. This assumably is the HDD bay. From the looks of it, it supports two SATA drives. The serial sticker states it had a 250GB HDD. Do I need to install another 250GB or can I upgrade to my liking? Here's a view of the expansion bay. I know the top 3 are PCI slots, but is the bottom one the PCI-e? I remember from my old Windoze machine building days that AGP slots were brown and didn't have the extra connector to the left. What would be the cheapest, barebones card that has a DVI out? This will never run anything more intense, graphic-wise, than Firefox and Logic. Lastly, what are these gray numbered bays for? I hope you can put up with all my n00b questions. This is only my second Mac and the other one I have is a MacBook Pro, so I am not very familiar with pre-Intel stuff nor internals. Thanks in advanced for your help.