Just in case you are a webdesigner and you need a variety of Internet Explorer Versions on your machine, try Tredosoft’s Multiple IE.

It is possible to run Internet Explorer in standalone mode without having to over-write previous versions thanks to Joe Maddalone who came up with a way of achieving that in November 2003. Basically, Internet Explorer is run by exploiting a known workaround to DLL hell – which was introduced in Windows 2000 and later versions – called DLL redirection.