Moving Windows XP to c:

Hi
I have 2 OS's running on my computer, i have 2 hard drives in my computer 1 is (c: 3GB Win 98 master) 2nd is (d:20GB win XP pro slave) how can i get rid of the 3 gb and still make the 20gb bootable to windows xp i know the jummpers and everything i can make the 20gb a master but it wouldn't boot up to xp though rite? so how can i make it so that i only have a 20GB hd installed and it boots on xp, do i move the 3 boot files ntdetect, ntldr and boot.ini to the d: and unplug the 3gb hard drive and make the 20gb the master?