Oh shoot, you're right on the motherboard. Sorry about that. Have you considered though getting a case that's a bit bigger? You could get the same chipset, this GeForce 9300, for a lot less plus a PCI-e slot. It's the difference between a square that's 6.7 inches per side, or 9.6 inches per side. I don't know the space you're working with, if you plan to display the computer tower next to the TV or what, or if you're trying to fit it into one of the cubbyhole spaces in your TV stand. Totally up to you- if it was me, I'd probably take the savings and get the slightly larger motherboard and save some dollars and find a way to fit the slightly-less-tiny computer

. I was just looking for ways to save a buck, and accidentally found a Micro-ATX board :\
Yeah, I'm sure you wouldn't have any issues if you just got 2GB of memory. Keep in mind that the GeForce 9300 will borrow some of that as shared memory, but you should be ok as long as you don't have too many startup tasks. And if it doesn't feel like enough, just toss another stick in later. Good idea with the one stick of 2GB. Grab stuff with 4-4-4-12 latencies ($44.99):
http://www.newegg.com/Product/Produc...ue&Order=PRICE
Case (with PSU) for less, also black:
http://www.newegg.com/Product/Produc...82E16811154091
Also if you buy that Mini-ITX motherboard now, there is a $15 MIR.