I'm a bit lost.. but why would you need all three of these operating system? I would just install XP and then BT2.. i mean for the most part BT2 does mostly what Ubuntu does and if you really like linux then just go to ubuntu and use BT2 livecd.. its best to have another computer with minimal hardware specs and couple of good network cards..I mean BT2 is mostly used for some king of penetration or hacking as we say it.. so why not have it always running and protecting your network.. if you 3 boot then you can only use one OS at a time.. I mean damn fine job on figuring out how to do it but its just one those when someone tells you hey! i can ride a bicycle with my head and ur like nice.. but wtf?
I'm just saying..