zeut02

I am a complet beginner with linux. I just installed linux on a second harddrive of a computer that already has XP on the first harddrive. Both operating systems work fine. My problem is with Grub. It allows me to select my OS from a menu but only allows 3 seconds and defaults to linux. Can anyone tell me how to change the default OS in grub? From my reading it looks like i need to edit the grub.conf file but I don't know how.