By Valefor.Sketchkat 2010-03-06 22:56:06
No, it won't work. The last PS3 hardware that was compatible with PS2 games was the 80GB model that was bundled with Metal Gear Solid 4, and that was in 2008.
If you want to play FFXI on PS3, you may want to check ebay cause it's pretty much the only way you'll find a backward compatible one now. If you do, remember that all the 20GB and 60GB models are, and some of the 80GB ones(not all, so be careful). Good luck!