Dual boot Problem with XP and Vista help me!!!?

Ok each OS are in a different partition, when i installed vista i was using it for a while, then every time i try to start the computer the boot manager screen always appears asking me what OS would i like to run xp or vista, so its annoying. well i ran vista and i changed the boot manager screen, i changed that i want to run xp only. i didnt realized by doing it was gonna ban windows vista from the boot manager, and it did. im running xp right now and i can only run xp because i dont know how to start windows vista, i tried to change the boot manager from xp but xp doesnt read vista.



http://articles.techrepublic.com.com/510



on this link you will see the boot manager screen, well its gone now and i cant change it back, the only way to change it back is by going to windows vista. i know i made a huge mistake and i would be glad if you can help me thanx.



if you dont understand let me knowDual boot Problem with XP and Vista help me!!!?
Download Vista boot Pro. I, too, have XP and Vista installed. By the way, Joe M is wrong; XP and Vista can be installed on the same drive. I have mine on the same drive.Dual boot Problem with XP and Vista help me!!!?
You cannot share the shame harddrive with both Windows Vista and Window XP