Boot.ini is a (usually hidden and read only) text format file in C:\. You can edit it using Notepad.
But I would feel more comfortable telling you how to edit it if you post a copy of it's contents here, along with information about the partition and physical drive your good XP installation is on (since if boot.ini is edited incorrectly, your PC won't boot at all).
But I would feel more comfortable telling you how to edit it if you post a copy of it's contents here, along with information about the partition and physical drive your good XP installation is on (since if boot.ini is edited incorrectly, your PC won't boot at all).