A: No, it is not possible to have more than a single version of Internet Explorer installed at the same time on any Windows platform. People who want to run Internet Explorer 7 and Internet Explorer 8 Beta 2 side-by-side have several options:
2. Use the Compatibility View Button to display sites in Internet Explorer 7 mode.
3. Use the new Internet Explorer 8 Developer Tools to switch Internet Explorer 8 Beta 2 between different rendering modes on the fly. The Developer Tools are installed by default with the browser, and can be accessed by pressing F12 or clicking the icon when running Internet Explorer 8.