I was able to use a Grub2 boot loader menu on my computer instead of the grub legacy menu that I was booting up, it was easier than I thought.
First I booted into the partition that had Grub2 installed, then in a terminal:
# grub-install /dev/sd?
sd? would be the drive where I have grub2 installed. Then the next time I booted up l was seeing the Grub2 boot loader menu instead of the menu from my other Linux distro that was using grub legacy. This is what I was trying to accomplish.
To make all of my other Linux distros show up in my Grub2 boot loader menu, again I booted into the partition where my Grub2 was installed and then entered:
When "update-grub2" is executed, Grub 2 will read /etc/default/grub and the files in contained in the /etc/grub.d folder. This combination will set the visual parameters of the grub menu (/etc/default/grub) and search for linux kernels, other operating systems, and items designated in user-created scripts in /etc/grub.d.
I rebooted and my new Grub2 boot loader menu showed all of my other Linux distros on this computer.