You should have just run the Vista install that came with the machine. Vista gets much more flack than it deserves, a large portion of it from people trying to run it on excessively old hardware. It runs just fine on every system I've installed it on that is less than 5-6 years old.
What is wanted is not the will to believe, but the will to find out, which is the exact opposite. -- Bertrand Russell, "Skeptical Essays", 1928