I only wish the game would not run on Vista. Would make it a lot easier to deal with. Having to tell someone who has been used to XP, they need to double the amount of RAM (4GB should be ok) and increase the CPU speed by about 25%, in order to do what they were doing before, and with lower frame rates, is not going to be pleasant.
If you are even considering purchasing Vista (above the basic Vista), check to be sure your motherboard will support 4GB of RAM. Many do not.
I wish I could afford to retire before they release this monster.