Need help to change SATA module on HP Workstation

I have an HP xw6600 workstation and I want to update the SATA-RAID module to let me use a 4 tbyte HD without loosing data, but I was not able to open the BIOS file.

here is the link to the HP BIOS:

http://ftp.hp.com/pub/softpaq/sp59001-59500/sp59217.exe