I would like to help you because i have a thing for bootloading. However you must be a little more clear and detailed. Do you plan to have both os on the same drive or partition? This makes a big difference in bootloading. Also what version of windows are you running (ntldr or bootmgr). I think it would be easier to have them on separate partitions and configure separate pbrs and one mbr. If you need help let me know just be more specific.