Windows 7 rocks your heaven
I have just had mine throught the post today thanks to play delivering it via city post rather than the royal mail otherwise it would have been a long wait.
It installed in under 30 mins didn't need to do anything but install apps afterwards it installed all the latest drivers for me flawless install. If your still using XP now is the time to upgrade and the home premium has all the normal person needs. It just works and looks flash what more do you want even has full system backup built in and lots of newer tech coming along can highly recomend after pulling my hair out with XP all them years.