Just got a laptop today pretty decent spec, it already has windows ultimate BUT i didnt get a free windows 7 upgrade :\ I really want to upgrade it to windows 7, but i dont really know which one to buy. I have 7 ultimate on my desktop pc. Its pretty well. Its going to be used alot of college work, and maybe abit of gaming in the car for long journeys. I was thinking home premium because its cheap. Does it still have the same range of compatibility as the ultimate ?