1.) download virtual drive and ISO mounting program (ex. powerISO).
2.) right click on ISO file, choose PowerISO > Mount [yourfile.iso] to > Drive: [F] (your virtual drive may have a different letter).
3.) right click on start button
a.) in Windows 7(-): choose Open Windows Explorer
b.) in Windows 8(+): choose File Explorer
4.) look in the explorer side panel, you should now see the ISO mounted to the virtual drive listed under This PC (Windows 8+) or Computer (Windows 7-).
5.) to open the virtual drive (do either...or...)
a.) left click on the drive with mounted ISO > opens ISO in explorer main panel
b.) right click on the drive with mounted ISO > choose expand or open in new window
Finished with the ISO? Unmount it.
6.) to unmount: right click on the mounted ISO file > PowerISO > Unmount Drive: [F]