Mythbuntu installed, XP Dual possible?

[RobotAlligator]

Long story short, I installed Mythbuntu without creating any extra partition space because I got some random error and my dad told me just to not worry about it. However, this computer is much better than my current one and I want to dual boot it with XP. I can't find GRUB Partition manager anywhere, and I was wondering if it is even possible to dual boot now?

I was going to install it with my other computer, but I had an extra 250GB SATA drove laying around that wasn't capable of going in with my comp(which has only 80gb hardrive)

It honestly isn't a big deal, I just haven't received my TV Tuner card yet and want to play some games in the meantime(on the better PC ofc)

[uopjohnson]

You can use a partition manager to change the size of your current partitions and then install windows. You would then need to reload grub as the bootloader because windows replaces it without asking. If you don't have any recordings and you haven't done a lot of setup I would highly recommend starting from scratch. Install windows xp first, leaving most of your drive un partitioned. Then install mythbuntu. This is much much easier if you don't have a lot of experience. If you don't want to go this route you should probalby post in the main install forum because you are more likely to find someone to help you with the specifics there.