I'd like to install ie9, but I want to keep my ie8 for web devellopment purposes. How can I do that ?
Also, if it is possible for others version of IE (6, 7, 8), I would be happy.
best way would be to create a virtual machine. Due to how IE is designed, it integrates with the whole system.
This is a common problem for developers. IE does not support parallel installations. The best solution is to install a virtual machine. There are several free VM software products, I enjoy using VirutalBox.
You will also need a windows OS. There is a 90 day Trial of Windows 7 Enterprise available to IT professionals for testing.