Which MB do you have?
Here is a link to the Intel RST driver I referenced for Download and and what chipsets it supports.
http://downloadcenter.intel.com/Detail_Desc.aspx?DwnldID=18859
Here is a link to the 64 Bit "F6" driver you would need during the install process for win 7.
http://downloadcenter.intel.com/Detail_Desc.aspx?agr=Y&DwnldID=18861&lang=eng
The How to is fairly straight forward.
(1) Put the Floopy files on a Thumbdrive NOTE Have to UNZIP first.
(2) Do a custom install.
(3) Select the "Partition/select partition" during the install.
(4) In that panel will be a little check box, for Installing HDD drivers. Check it
(5) It will then ask where drivers are located, browse to the thumb drive.
(6) complete installation of win 7, When win 7 installation is completed then you can download the Main RST driver (My first Link) click on the Main RST driver an let it install, can be done before win updates or after win does it's update thing.
If you have a server MB, then CHECK to verify your chipset is listed!!! also make sure you down load 64 bit for Win 7 64 Bit, OR 32 Bit for win7 32 bit