Windows has utilities for burning CD and DVD images.
They're called:
Cdburn.exe: ISO CD-ROM Burner Tool
Dvdburn.exe: ISO DVD Burner Tool
... and are part of the Windows Server 2003 Resource Kit Tools , which can be downloaded for free from the Microsoft server. Suitable for both Windows Server and Windows XP. For reasons unknown to me, Microsoft has erased all the hyperlinks that lead to this page. And you can download. They write the disc quickly and reliably - verified.
PS To the question - “why, when there is Nero?” - I just have such a craze - do not use unlicensed software. I didn’t see a quality frivolny recorder for Windows. All that came across, like MagicISO - periodically falling. If someone came across something worthwhile, write a comment, please.