There is no information about the 1.1 version you have mentioned above. As I can see on the official website, Type To Learn Jr. is compatible only with Mac OS X, Windows 2000, Windows XP. The latest version is Type To Learn 4 is said to be compatible with Mac and Windows, but it doesn't specify for which version exactly.
You contact the developers to obtain additional info: http://ttl4.sunburst.com/support.php
