But that's standard. A lot of people who go out to buy expensive mice want the best experience from it which means customising what goes on. I'm using USB Overdrive to get my Razer the way I want it in OSX. I don't really bother with customising details on the XP side. Especially since OSX also has very slow mouse speed and odd acceleration when using a very high DPI mouse.
having an expensive mouse with fancy drivers is silly and it wont make you good. its just a way for razer to market their mice and charge out the wazoo for a "pro gamer" mouse. just because your mouse has more dpi does not make it superior. its like megapixels in a digital camera, a metric that is used to sell a product to the uninformed that think dpi makes a mouse better.
for gaming the mousepad is probably more important, not some 99999dpi razer mouse that lights up when you sit alone in the dark pretending to be a pro going 24-8 in a pub. in the end it all comes down to the mouses shape IMO, whatever feels comfortabe and is easy to move/play with is the best mouse YOU can buy.
/rant