Do you have any recommendations on where to buy XP computers? (If one doesn't have the courage to build one's own?)

I saw that Staples can custom build one -- but it is more expensive than buying a new Vista machine.  (I am trying to hold off until Windows 7, but I've maxed out my old XP box, and it's is showing signs of wear & tear.  Upgrading/replacing components is getting into the new machine price range.)

Thanks in advance for your sage advice.

(I am glad to discover this message board, and hope it becomes as active as the old SM forums.  I posted this same question today on the old SM forum, before noticing that it had shut down...so, I apologize if anyone sees this as a multiple posting. )

-- Joan