Posted 01 August 2008 - 09:55 AM
Uninstall Ubuntu? Dood, just install a new Linux distro in its place. Allow the installer routing to format your partitions, except for where XP is, of course. XP will stay safe.
Grub does not create a seperate partition for itself -- it goes to the partition you tell it to, use the first partition on your harddrive. Unless you know what you're doing -- you can install the grub boot loader wherever you want.
You're making this too complicated. Install Gentoo and allow Grub to goto the first partition, install it to the MBR and it will overwrite the mess you have.