Unable to load windows 2003 server free trial IOS images

[brealalan]

I have downloaded the free trial of Microsoft Windows 2003 Server Enterprise R2 following the instructions as provided by microsoft support. I've burned the ISO image files X13-05665 and X13-05463 to a blank cds separately. When I booted it, after I restarted my Windows XP, from CD Rom I'm getting the the DOS version Caldera DR-DOS 7.03 command prompt on command line interface. Does anyone maybe have any idea or any solution for case such as this.

Thanks in advance