Dell SATA AHCI Drivers

Hi, please help me.
I have Dell Inspiron 1318 and I have new WD SATA II 500GB Hdd. I format new HDD and i appended to my notebook. I launch win 7 instalation, but notebook want some drivers. I add sata drivers as i found on the internet. It’s good but installer want newer version. Please help me.
Thank you
Answer #1
http://support.dell.com/support/downloads/index.aspx?c=us&l=en&s=gen
try this