best dual boot strategy?

[baz der]

HI,

Starting from scratch, what is the best/easiest way to install
Windows XP and Ubuntu on the same drive?

My current idea is to install XP, then boot into SystemRescueCD
and use QTParted to resize the ntfs partition down  - then install
Ubuntu into the unused space and hope it configures grub to give
me both options when the machine boots.

Is there a better way to do this?  Partition the drive first maybe?

many thanks,

bazder