I have installed XP on Vista, but now only XP boots

I followed the instructions for installing XP and everything seemed to be fine. However, when the system boots it shows both OSes but XP always boots. When you look at the Advanced setting tab in XP, it lists XP twice.

I tried to go back and rerun the setup. I can get through the boot the Vista CD and go throught he Step 3 part, but then when I get to Step 4 I am stuck, because I cannot boot Vista and XP does not appear to support the bcdedit command.

Vista is on partition C, XP on partition D on the same harddrive. When I looked at the bcdedit file after my initial setup, it looked exactly like the one in the example.

How can I proceed.