So you've just downloaded Visual Studio 2008 in .iso format from MSDN subscriptions...what now? Well you can burn this image to DVD then install from there. But what if you want to just extract the .iso and install from HD?
To do this you need a UDF (Universal Disk Format) compatible extractor. You can use either ISO buster (not free) or WinRAR which supports UDF from version 3.7 and onwards.