Visual Studio ISO files downloaded, how do I run? Do I need virtual drive tool?

Use 7-Zip to extract files to some folder.

I use MagicISO to mount and install from iso images. It's freeware and there are versions for Windows XP through Windows 7.

Virtual CloneDrive

Supports all common image formats such as ISO, BIN, CCD

Supports up to 8 virtual drives at the same time

Easy to use - just double-click an image file to mount as a drive

Virtual CloneDrive is freeware, you may use it at no cost.