boot manager selected entry could not loaded because

Hi, I have XP in C: and Vista in V:. Currently the vista boot manager can boot to vista but if try to go to xp get "The slected entry could not be loaded because the application is missing or corrupt." If use xp CD and in recovery console do fixboot c:, fixmbr \Device\hardDisk0\Partition2 (small unused partition 1) and then fixboot again, i can now boot to xp but it is direct and can't boot to vista. If use vista cd and repair startup once again can boot to vista but once again can't boot to xp. Help???? Thank you, Brent

Hi, I have XP in C: and Vista in V:. Currently the vista boot manager can boot to vista but if try to go to xp get "The slected entry could not be loaded because the application is missing or corrupt." If use xp CD and in recovery console do fixboot c:, fixmbr \Device\hardDisk0\Partition2 (small unused partition 1) and then fixboot again, i can now boot to xp but it is direct and can't boot to vista. If use vista cd and repair startup once again can boot to vista but once again can't boot to xp. Help???? Thank you, Brent