Finally decided to re-install my still in great condition x1650 pro 512mb. I used it previously from late august 2007 to july 2008. in july 2008 i 'upgraded' to the sapphire hd 3850. just removed the still great working sapphire 3850 512mb and replaced with the older, less powerful, but lets face it way cooler nostalgic x1650. I found my favorite driver to. Its the 7.10 (Oct 11, 2007). 7.11 was Nov 21, 2007 but i prefer 7.10. When I go to install the driver it gives me the option to install ''Earthsim''. What is that exactly? Thanks if you can help.