Hi. At 1st I installed Win XP. 2nd thing was installation of Win 7 next to XP. I didn't install 7 on other partition but on VHD. In this moment XP's bootloader got replaced by 7's bootloader. What about formatting partition with C and new bootlader?

I have fresh installed XP and vhd file with 7. How to add (how to change XP's bootloader with 7's one) this vhd file to XP?