Weird. No charge here... www.logitech.com/en-au/428/783?softwareid=671&osid=14§ion=downloads - this is for my old MX-1000, what mouse are you using?
I use a Logitech Mouse. I've had it for quite awhile so I don't remember the number. It is one of the smaller type that your hand can cover, which is what I like about it. I use a Gigaware keyboard, which the Gigaware mouse never worked with. This is a strange game. The strangest I have ever seen, even the color and size seem to be off. If you don't run it full blast, with the highest settings it is so blurry everything looks like an out of focus lens. My current computer a Hewlett Packard Pavilion, with a dual core Athalon processor, A 4GB DDR3 system memory, ATI HD 3000 graphics card and a 500 gig HD should be able to handle this without a problem. My OS is Windows 7 but don't think that makes a difference, since I had the same problem with my old computer a Dell AT/410. All I can think of is to switch from digital to analouge and if this doesn't work forget it.