How do I open ISO files?

I have downloaded a software in the ISO form, but I am unable to open it to install it alongside my existing version of Windows XP.

The Microsoft's site states that Windows doesn’t support ISO files and a third-party utility is required.

ISO files are disc images, and you can burn CDs from them using any CD-writer and CD-burning software that supports ISO images.

If you don’t have burning software then you'll find a freeware tool called ImgBurn available at http://www.imgburn.com/

Once installed, run the program, click the first of the three available options and choose File -> Write Disc from ISO File. Insert a blank CD, browse to the ISO file you downloaded and the program will burn the CD for you.

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You can also choose from another list of softwares which can be found here:

http://en.wikipedia.org/wiki/List_of_ISO_image_software

I believe that this problem has been solved...