Roughly 10 years ago, Jonathan Thorpe made a GUI called QBF OS 99. He gave the source code to a QBF OS enthusiast who made QBF OS 2K.

You can download it on the site.

Maybe you could add the link here? There is hundreds of files to dig through.

Found it:
http://www.qb45.com/files.php?action=showfile&id=1386

File search can help too. ;-)