Is it possible to dual boot an existing vista machine?

[mortuzac]

I've just bought a pc with vista pre-loaded. Is there any way I could create a dual booting system - booting into xp if I add, say a usb memory card at start up?

Your comments would be appreciated.

 

[R6Armadillo]

I managed to get Vista and XP dual booting by installing XP onto a seperate HDD. I used the guide from Here hope it helps.