I have 11NB5800 too. Is there any option to have XP on external-USB connected HD or on SD card and keep Vista on the internal HD and decide which OS to boot? That would be great for me because I am not a TechGuy:) – not able to struggle reinstallation and because I am leaving for Africa for few months and that gives me opportunity continue working while one system is bluescreened.
Can you recomend and guidline how to install XP to external HD and setup BIOS? My Vista doesn`t allow me to install XP at all, not even to the external HD or SD card. BIOS doesn`t show me option to boot from USB or SD card, just CD/DVD, HD or some Network:Realtek Boot Agent – what is that?

Thanks for any help