Source code is freely available to anyone upon requeset under an open-source agreement.
While it does work on Windows 98, it has not been as thoughourly tested on this platform. Click on the link above for the package to install. Select the 'Run this program from its current location' option and press the OK button. This program will make shortcuts on both your desktop and Start Menu. For this reason, we have also provided separate installations of the viewer and the receiver.