Tekken: Dark Resurrection

Ghost is an intulectual player(comp)
that you created by fighting with the character you have when the ghost update is on.
you can turn it on by selecting auto save at the options
you can send those ghost to friends and the internet

I don't get it, which menu is the ghost update thing on?

Its basicaly a file of inormation on how an individual player plays the game...Allowing you to play against a reprisentation of that other player.

To download some Ghost Packs go to 'Network' on the Main Menu

Then 'Online' (Providing you have wireless access)

Then just follow the instructions until you come to the 'Online' Menu

Then choose Ghost Pack Download and pick a pack to download.