Cannot boot xp from grub in multiboot

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http://www.linuxforums.org – I have a computer with windows 7, windows xp, and ubuntu. The problem is I can't boot xp. Whenever I try, I get a black screen. I would like to be able to boot from xp, 7, or ubuntu from grub Here is what I have done: 1) Installed XP 2) Used gparted to shrink xp partition and installed ubuntu 3) Used gparted to shirnk xp partition and installed windows 7 At this point I am greeted with the vista bootloader and can only boot windows 7 and xp 4) So I use gparted from the ubuntu cd to restore grub Now I can only boot ubuntu 5) So I edit my menu.lst file and under windows I change "rootnoverify (hd0,0)" to "rootnoverify (hd0,1)." I really have no idea what i did but it works. Now I can boot ubuntu, and when I click on the windows entry I enter the vista boot loader and have a choice between windows 7 and xp. The problem is when i try xp, I just get a black screen. But windows 7 works ok. Can someone help me fix this? I was hoping there was a way I can get back into xp somehow. (HowTos)