A computer with Windows 2000 or later installed with approximately 15Mb disk space, a pointing device (e.g. mouse) and a screen which supports 256 colours and a resolution of 800x600.
Microsoft .NET Framework (Version 1.1 or later).
If you do not have Microsoft .NET Framework installed on your computer you can download it now.
2. Microsoft .NET Framework
It's pretty big (23Mb) and could take over an hour on dial-up, or a few minutes on broadband. If you prefer download it directly from Microsoft website, you can do that. The download page is pretty scary, but just look for the button in the middle of the screen.