My motherboard intel 945 GCNL drivers cd along with motherboard . video drivers are not going to install ?

i have purchased COMPUTER WITH INTEL 945 GCNL SERIES MOTHER BOARD. Drivers CD comes along Motherboard. First Time the Video Drivers installed properly... after few day i have formatted my system and trying to install video drivers ... its give me some alert message box like "Sys configuration is not updated to install this software some thing like this...." whats the solution for this? - ibrahim.