Windows 7 64bit install

I am trying to Install Windows 7 from an Iso that I downloaded from MSDN through my school. However every time I try and boot from the dvd I burned it doesn't do anything it just goes straight to Windows Vista. I am currently running Windows Vista Business 32 bit, so I am trying to do a clean install. I have also set my motherboard to boot from the cd first, but it still doesn't do anything. I also know that the files are on my dvd because if I search through it on vista it displays the files on the dvd. Any help would be great.

I figured out what my problem was. My bios didn't allow me to use my keyboard or mouse. When I enabled my keyboard it worked fine. Thanks for the help.

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