Here's the newest JP XiJobChange plucked off from Horane that works... somewhat. You can no longer switch jobs outside cities (as in areas with mog houses), but you can however, switch jobs anywhere inside cities (as well as access delivery box in case you didn't know). It has lost much of its usefulness, but it's still handy to have if you hate running back and forth to mog houses to switch jobs. I haven't found much use for it in terms of xp hacking, though you CAN use it during besieged if you wanted to get a quick 1k for a lower level job. If anyone has any ideas on how you might exploit this further, please indulge! I have scanned this file myself on jotti and there were no viruses spotted, enjoy!
PLEASE DON'T OVERUSE! It is quite easy to be caught using this program so be aware at all times!