Simple , when loading OS , it will ask you if you need to install peripheral drivers.
Burn the SATA drivers to a disk and when asked press appropriate buttons for the driver input (S , f6 i believe).
Once the SATA drivers are installed , its just like any other OS install.
Beware though , in order for update to work with MS after a reinstall post sp-3 , you'll need to reset the update service.
In command type regsvr32 wups2.dll .
If you don't get a message saying it installed , or have problems with MS update after that , do a search for "wups2" for the thread with the full command line stop \ start of the service.
Also , do a custom install of updates and get all of them before you do sp-3 install.