Of course if you have anything besides WindowsXP it might not look good or even work. But that's all the more reason to upgrade your tired old compy. Seriously, you know it's sitting on the floor sucking up more dust bunnies than the vacuum cleaner. Dust = old. Time to make the plunge homecheese.
tigerdirect.com has some refurbished computers for $99 that make your box look like an innertube trying to wrestle a paintbrush in sugar-free jelly.
I don't really know what that means. Act like you do, though.