Dell Server 2003 R2 Iso Download

I need to do a fresh install of Windows Server 2008 R2 on a Dell PowerEdge 2800. How will I get the Server 2008 R2 DVD installation to see my RAID 1disk? I know usually I need to somehow load the RAID drivers during or before the Windows install but cannot remember exactly what to use to do this??
I know Dell usually has some type of boot ISO CD that can be downloaded that 'pre-loads' the RAID drivers to kick off the new OS install but I'm not sure which ISO I need(well that is if I even need to do this) Here is a link to the Dell support page that has some ISOs :Dell Server 2003 R2 Iso Download

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http://support.dell.com/support/downloads/driverslist.aspx?c=us&cs=RC956904&l=en&s=bsdr&os=WNET&osl=en&catid=&impid=&SystemID=PWE_PNT_2800

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If anyone could point me in the right direction it would be much appreciated! Thanks!