Dual booting

Hey guys, got a slight problem here.

I recently installed the Vista. I have since removed it, but stupid as I was I simply formatted the partition it was on from within Windows XP.

Now during Boot it still shows me the option to start either Vista or XP, worse it defaults to Vista and I can't figure out how to remove that. I already tried booting from the XP CD and doing a fixmbr (I think that was the command) as I figured that would work, but it didnt.

To be clear, I want it to auto boot XP again without asking me. Basically the way it was before.

Any advice greatly appreciated.