I can etch a board for you if you send me a full size etching diagram.

... but can you do it for free? I want to do this myself (or for free ). Plus I want to learn how to do this right. Do you use ferric chloride?

Why don't you just use a strip board/veroboard?

That's what I'm going to have to do for now, but it makes it about twice as big as it would be with an etched board.

How big is it with the stripboard?

I'll get exact dimensions after I actually assemble it all, but I'm thinking about 1.5" x 2.5" vs less than 1" x 1.5" with the PCB.

Yeah, My Digital Teacher encourages us to do our own projects so he'd provide the Copper Board, so Yeah, I can do it for free. (Of course I'll also Make my self one too, )

That's not huge.
Any chance of a list of all the components, and I might go buy some?

SR2K: I'll email you the EAGLE files and you can make 3, for you me and Deary. Thanks! And any chance you could PM or email me with some tips? My boards seem to always have a really thin layer of copper left that shorts everything...

Here's the partslist, the "pinhead" parts are just placeholders for the drill holes for the external connections. R_TIME is the resistor you change to get different lengths of time to leave the fans on, 560K makes it close to 5 minutes. You can use a 555 monostable calculator like this one to find the value for a different time, just put 0.00047 F as the cap value. Actually... you could change both the resistor and cap values however you want, 470uF is just what I had sitting around. The relays are the only specific parts, here are the two I used:
http://search.digikey.com/scripts/DkSearch/dksus.dll?WT.z_header=search_go&lang=en&site=us&keywords=Z773-ND&x=0&y=0
http://search.digikey.com/scripts/DkSearch/dksus.dll?WT.z_header=search_go&lang=en&site=us&keywords=HE100-ND&x=8&y=14

The list:
http://pastebin.com/f4a31c2fe

Heh heh, you can send me it with the HDD's.

I just sent the board layout to SR2K, but someone should check it because I've never actually made it and it could possibly be wrong. I've used the same schematic on a protoboard with different relays so I think it should be fine, but someone should look over it.
And also, what happens if the fans are connected to 5V while the console is on? Because if you turn the console back on before this circuit times out then the fans will still be connected to 5V.

gotem, The only thing that worries me is how thin the traces are they could be susceptible to burning out.

I can send you another with thicker traces in a few minutes
Edit: Isn't it only the OUT lines that will carry any significant current? So could you run over those with a sharpie and make them thicker?

IDK, I generally make voltage transformers so those traces just look tiny to me.

I'm pretty sure 1/16" to 1/32" is fine for signal traces, but still make those OUT lines bigger if you think of it.