This software is designed to work on Windows 98 / Me / 95. However, you can try running it on your computer with Windows 7 by using Program Compatibility troubleshooter. You can find it by going to Start -> Control Panel -> Troubleshooting. A new window should open, and you can try clicking on Run programs made for previous versions of Windows under Programs, and follow the instruction provided from there. This should fix your problem.
Also, you can check the following web page for more information about running programs designed for older OS.