Recovery DVD won't boot

Hmm, so how do I boot from the recovery disc? I know, that's a noob question, but my machine won't boot from it. I burnt the ISO to DVD with ImgBurn, I can see the files present on it, I set my BIOS to boot from it, except it won't boot from it. :(

 

I press a key to boot from the DVD, it spins up a bit, then just proceeds to go to Window. Am I missing something?

 

E:\>dir
 Volume in drive E is NGH15.0.1-SRD
 Volume Serial Number is 4A9E-1386

 Directory of E:\

03-03-2010  16:46    <DIR>          AUTORUN
03-03-2010  16:46         1.945.440 AUTORUN.EXE
03-03-2010  16:46                47 AUTORUN.INF
03-03-2010  16:48    <DIR>          BOOT
28-07-2009  13:31           333.203 BOOTMGR
03-03-2010  16:46    <DIR>          DOCS
03-03-2010  16:46    <DIR>          DRIVER VALIDATION
03-03-2010  16:46    <DIR>          EFI
03-03-2010  16:46    <DIR>          MANAGER
03-03-2010  16:48    <DIR>          SOURCES
03-03-2010  16:47           788.962 SYMDRIVERINFO.XML
29-07-2009  10:18               221 SYMINFO.XML
03-03-2010  16:46    <DIR>          UPDATELOCATOR
               5 File(s)      3.067.873 bytes
               8 Dir(s)               0 bytes free