Right now what i have is
Intel Pentium CPU 3.2 ghz(2 cpus)
2994 ram(running XP I have 4 gigs in though)
Nvidia Geforce 9800GT 512 mb

Am i missing anything? If not what should i upgrade first. I wanna try to get FFXIV to run decently on my computer.
I was thinking about getting windows 7 so that i can use the full 4 gb ram. But idk I'm not exactly a comp wiz