Ugh...again...AGAIN

[Blah]

Ok ok folks I got it on there by golly (and after I felt really silly for not thinking of it sooner)
Step 1: Put the old hard drive into the old 360 and uninstall FFXI.
Step. 2: Put the old hard drive into the new 360 and install FFXI.
Step 3: Put the new hard drive into the new 360 and play.
Of course this all depends on whether your old 360 is still up and running, if it's not you'll have to try to buy a used copy and try installing it. I am lucky I didn't burn mine out.
So thank you thank you thank you for helping me guys.