the 10/100mb PCI NIC is a network card so you can use high speed internet like DSL, and Cable. You might be able to run the game you have enough memory and the video card will work. for the low res and high res stuff i don't know much about cause i run a GeForce FX5200 Ultra and it works great with it. so i have my graphics maxed out and it doesn't slow down with lag or anything. now your processor is well fast enough according to the box. if you wanna spend a tiny bit of cash you could get AMD Duron at 1.0 ghz or something and that would help the game run better or an extra stick of 256mb SD Ram PC133 would also help. I never did do the score thing cause i didn't have to. It might work but what you should probably do is after you install the game under Start -> programs -> PlayOnline -> Final Fantasy XI config is a bunch of graphical options, you might want to set them all to low. and the 56K is gonna suck at downloading the patch. It took me 2 nights of leaving my PC on. but it MIGHT work.