Currently:

Intel Core i7 2.4GHz
4GB Ram
Radeon HD 5870 1GB
Windows 7 Home Premo 64-BIT
1TB HDD
Sony Bravia 40" LCD (when I can. LOL) else Acer 19" LCD

And I saw the link someone done for the PS2 screenshots, yeah they look good, but the thing is.. FFXI is a PS2 game initially, that has been ported to the PC and the 360, just the PC / 360 versions have been optimsed to use what is available (like bigger screen res, further draw distance ect...) the overall graphics.. however, won't be that different. they may appear smoother due to the resolution, if you put your PC version to the same res as the PS2, there you have it!