Unable to see the Hard Drives in WinPE 3.0

Hi,

I want to install Windows 7 Professional 64 Bit in WinPE 3.0. But I am not able to get the correct driver so that it can detect the drives.

This PC has LSI 9217-4i4e SAS drives. 

Please help me to get the drivers. I need to inject in the image so that I can see the Hard Drives.

Thanks,

Sourav