Tri-boot Project

So my desktop has been acting quite screwy lately. Mostly because all of my hard drives were full. I was unable to load up a Windows Update. I held off of it mostly because I didn't want to loose any of my files. (Music, Movies, Porn, etc) It didn't help that I only have an 80GB, 40GB and a 20GB hard drives in my computer. The other reason was because I wanted to try Ubuntu on my Desktop. I also wanted to try Windows 7 on my desktop. But I also wanted something that would be a stable backup in case these didn't work. That's when I got the idea to tri-boot my computer. Now I'm going to be frank. (no I'm going to be Magical, but my words will be frank) There is NO DOCUMENTATION ON THE WIRED that will tell you how to do this. (I mean really, If you into Windows 7, you don't want Linux, and if you into Linux, you really like Microsoft.)

The goal of this project is as follows
1) Install XP on the Main (80GB) Hard Drive
2) Install Windows 7 on the 40GB Hard Drive
3) Install Ubuntu Intrepid Ibex on the 20GB Hard Drive
4) Get all the systems to recognize all devices
5) Get all systems to play nicely with each other.

This last one is going to prove the trickiest as nether XP, Windows 7, or Ubuntu really like each other. I will note. This is not going to be a definitive guide until i finish the project. I am going to publish some of my mistakes and goofups as well. That way if you get into trouble like I have will on occasion, You can see remotely how to fix it.