If you have nero all you need to do is open Nero Burning ROM, not Nero Express. Cancel out of the popup wizard thingy, click the drop down menu Recorder then click Burn Image, tell it where the ISO is, make sure you close the disk and leave everything else alone. Ive burned hundreds of ISO's this way, if it doesnt work the ISO is bad or the media is bad.
Your server should come with a driver disc and probably a setup disc. If it doesnt you can create an account on dell and put in your service tag and get access to all the drivers you should need.
RoadKi11
"This apparent fear reaction is typical, rather than try to solve technical problems technically, policy solutions are often chosen." - Fred Cohen