would this game run? it's requirements are 64 mb of ram, 600 mhz p3 processor. is it worth downloading and trying out?

well im no techie but your xbox uses 8mb approx for graphics which leaves you 56 mb - ish. So !!!
Try it ! If it fails then ask around for help.

needs 600mhz cpu?

will never run with dosbox.

Also PSO means Phantasy Star Online? isn't that a windows game?

http://forums.sega.com/archive/index.php/t-17526.html

sorry the guy said 300mhz p3 processor and 600 mb of space

pc/windows games will not operate in dosbox.

dosbox is for dos applications only.