You could have installed it as dual boot instead of taking out Vista completely because at some point they will stop giving updates for XP, especially as Windows 7 is coming out.
You have to be careful with dual boot though because you can seriously mess up your hard drive and be unable to start if you do not know what you are doing.
Even so, I doubt that will make it any better. XP allows for easy flow. With Vista you still have to keep disabling to get something the way you want it.