Computerhilfen.com: Help Please Integated Video Driver for Intel

Ok so i have a Dell Optiplex GX260 with a Intel 845 chipset, i recently reformated my pc etc... everything seemed to be working Fine on games until i got on my favorite game which is really good with graphics, and the characters/monsters were hard 2 see etc...i believe what i am missing is the Integated Video Driver (http://www.computerhilfen.com/explanation-d-Driver.html) i tried to install the driver (http://www.computerhilfen.com/explanation-d-Driver.html) Extreme Graphics 2 and dell's driver (http://www.computerhilfen.com/explanation-d-Driver.html) page recommended i use this driver (http://www.computerhilfen.com/explanation-d-Driver.html) ...but i got the error The INF file does not contain information for this system's hardware (http://www.computerhilfen.com/explanation-h-Hardware.html) Im guessing reformating my pc screwed the inf file up..so ya Any Help would be Very appreciated.

Reinstall all the appropriate drivers by using the ResourceCD.