A. With the latest Ubuntu 8.04 desktop version, Triple boot with Windows XP, Fedora and Ubuntu is as easy as ABC.

1. Make a partition for  Windows XP (SP2) which is about 2/3 size of the whole hard drive;
2. Install Windows XP into it;
3. Install Fedora 9  into the remaining space of the hard drive;
(* Now you can dual boot with both Windows XP and Fedora 8, grub loader *)
4. Now boot up from Windows XP, after it has loaded insert the Ubuntu 8.04 desktop installation CD, the installation prompt (GUI) will pop up. Follow the on-screen instruction to install the Ubuntu 8.04 into the machine within Windows environment (Thank Ubuntu for this genius design!), the triple boot PC is born!



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No configurations are needed (of course we can always modify the grub.conf file under both Fedora and Ubuntu (menu.lst), I can even manage the boot configuration under Windows XP between Windows and Ubuntu).
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The only limitation is:
Under the size choices of Ubuntu space (when install it within Windows XP), the maximum option for Ubuntu is only 30GB. But I believe we can always mount an extra space outside of the partition as long as there are extra spaces available (I have not tried yet).

UPDATE:Wubi installer can be used for Triple booting with the old versions of Ubuntu.

Hope this can give some confidence and help to those Tri-Boot lovers!