That steaming pile known as vista is now allowing people to pay for the privilege of downgrading to XP after purchase. OEM's are nwo also allowed to sell XP for at least 5 more months.
MS office 2007 has a steep learning curve and excel can't do math....MSFT=$20/share in 12 months. Roughly a loss of $70billion on paper. The days of the OS being important are fading fast. In 5 years it won't matter. Do you have any idea which operating system your, car, ATM, phone, GPS or MP3 player are running. Why should you really have to care about your PC.?