Reviving GRUB

im attempting to triple boot winXp,whitebox and windows 98.(in order of installation) everythings fine(im able to triple boot them) but i have install win98 in the wrong drive(which is annoying winxp and win98 have different names for their drives).i deleted the installation.now grub is nothing to be found..how can i revive my grub? because i can't boot from whitebox.. :(

im not at all familiar with whitebox but im thinking that youll need to boot it with a boot disk and run grub-install to send grub to your mbr.