Installing an ISO file from Mac OSX to a parallels Windows instance

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Yesterday I attempted to install Visual Studio 2008 from a DVD onto my
mac parallels Windows 7 instance. After sitting back and admiring the
pictures of happy Microsoft programmers provided by the VS
installation software, I heard a ticking sound coming from my
computer.  After several minutes, the install crashed. Some sleuthing
proved that the disk was scratched and worthless – a typical Monday.