In the manual install instructions for burning a CD, the instructions on the web http://msdn.microsoft.com/vstudio/express/support/install/default.aspx page say
"To install the image directly from your hard drive you will need to install 3rd party software that is capable of understanding *.img file extensions. Popular software programs like Roxio’s Easy Media Creator include a Disk Image Loader application that enables you to mount disc image files in a virtual drive as if they were physical discs in a physical drive"
Well, I forked out AU $144 to purchase Roxio's easy media creator, and it doesn't understand what a .img file is - it is NOT a supported format. What a waste of good money when I didn't need to buy it. Good one Microsoft. :(
NOT HAPPY.

Bad Advice - Don't use Roxio
Letícia Banffy
I used Nero to burn my images which doesn't work with .img files either; but .img's are technically the same as .iso's. So I renamed the file .iso, opened up Nero and burned away; worked great for me. I've done this many times in the past for other .img files as well.
Joe
ichNET
Try ISORecorder PowerToy: http://isorecorder.alexfeinman.com/isorecorder.htm
It allows you to right-click on .iso file (rename .img to .iso) launch a wizard from your explorer, i.e.: shell integration!!!
And it's free too.
DPaul
http://fileforum.betanews.com/detail/DVD_Decrypter/1011845169/1
It's called "DVD Decrypter 3.5.4.0"
Others have used it with good results, and it is Free to download.
Jonathan Rajotte