Seems Bryce 5.0 is still up there as well!

http://www.download.com/Bryce/3000-6677_4-10590029.html?tag=lst-0-1

B5.0 Content File is also still available.  Presume that as it is still available for download that you can still get a serial number from DAZ when you run the program for the first time (no promises, sorry).

 

Brett