Via mezzoblue comes one of the best finds in the field of Web development in the past few months: it’s possible to run instances of different Internet Explorer versions on a single machine, contrary to what was previously believed.
The way to do it is awkward and something of a kludge, but it works and solves a big problem when testing sites. For example, according to this site’s statistics, most IE visitors coming here are using version 5.5, but a lot of others are using 5.0 and 6.0, which means that whenever I change something I have to test the site in all those versions. However, I have only one machine, which runs IE 6.0. Now I can easily test any changes in all those versions using only my own machine. It’s a hack, but a very nice hack indeed.