Vio1

i used nlite to remove unwanted stuff, and add in extras, and when i went to install it loaded everything up (blue screen), restarted and then gave me an error that it could not find the bootmgr. Tried this twice and still didnt work. I have 3 harddrives: 2 hdd in raid, and a storage drive. The 2 hdd in raid are partitioned (first partition is vista, second was supposed to be xp). I think the problem is that the bootloader is in the xp partition, but the bios is looking in the vista partition. How can i solve this?