I only want it for the MP portion. A group I've gamed with for about 5 years or so on Call of Duty: United Offensive has a server set up. It's a 32 player server, and remains packed. Then again, the UO server is a 44 player server, and remains pretty packed.
I only recently actually played the SP portion on CoD2. The group had a CoD2 server, but no one played because the weapons had no recoil, and the maps were so tiny that there was no point in getting anything but a SMG, as those could be used to snipe. CoD4 and WaW servers failed so fast, that I didn't even bother with them.
In UO, I almost always have a bolt action rifle, except for American maps, where I generally use a BAR. I disliked the semi-auto rifles in UO, oddly the one thing CoD2 got right was reducing recoil to the point that the lower damage didn't make them useless as a rifle.
As far as building another desktop, even with buying a monitor and keyboard I could probably manage to price it less than what the laptop I was looking at would run. *shrug* I might do it. I don't need RAM, actually, since I have 8gb laying around the house. Probably got a soundblaster too. I already promised my mom I'd reformat this laptop and set it up for her, so using it for older stuff is out.