OSes not showing up.

I have three Operating Systems in three different drives viz. C-Win 98SE, E-Win XP SP2 and G-Win XP. However, during booting I am not getting any trace of the OSes on C and G drives. I've used Acronis OS Selector but to no good result. Acronis is also not detceting the additional OSes. But, I'm sure these two OSes are not corrupt. They just need to be identified during booting. Plz help.
N.B.: I wish u all A VERY HAPPY NEW YEAR 2006.