I have windows XP home installed in my PC. Recently I brought a new HDD and installed Redhat 9 in that. All was fine. The grub loader gave options to choose between linux and windows. After a few months I installed XP professional also onto a new partition in the new HDD. Linux was present on another partition. After installing windows the grub loader doesnt work anymore. I have only dual boot for XP home & XP professional. How do I reinstall the grub loader so i can boot linux also. I have the linux cd's with me.