Error Install Win2003 Server with Dell system build and update utility

Hi,

I'm trying to install Windows Server 2003 R2 x64 on my PowerEdge 1950 server and using Dell system build and update utility to do that. But after 5 minutes after formating drives it want me to insert the Dell OpenManager Server Administration cd/dvd version 6.5.0. And I've downloaded the verison on Dell's homepage but when burned it to the dvd and inserted the disc to the server it says invalid..

The DVD contains a linux installation..

I've tried several ways but it will not help..

Machine: PowerEdge 1950
Bios version: 1.6-173
ServiceTag: 3V1X33J