zing_deleted

ok found it

boot from vista dvd
enter boot whatever and I believe you get to a command prompt at this prompt enter this key
bcdedit /displayorder {802d5e32-0784-11da-bd33-000476eba25f}
this should then add the older operating systems options and I believe use the existing xp boot ini file

(edit this may add a rogue operating system in the order that will not work however you should be able to delete the wrong on in vista)

User runs the risk on his own cuz I aint tried this yet