4.5 Get it while you still can, excellent value, ukcultscifi | 09/06/2009 | See all ukcultscifi's reviews (7) Recently decided to downgrade my Vista Home Premium SP2 HP PC to Windows XP Pro SP3. What a difference, less waiting and everything launches much faster. Who needs Windows 7 XP virtualisation. Runs all my software, games and printer drivers.I don't need a 64-bit OS right now along with possible incompatibilities. XP professional version supports business networks the same as Vista Business and Ultimate.