I followed the instructions you provided from the links. After uninstalling all users computers, I upgraded the server and reinstalled all the stations over the weekend. I had trouble with three older computers where on two the password login either would not keep the password or just hang, the third will not connect. The 32bit 4.4 helped one computer. I am also having a problem with two newer windows 2000 pro computer where the password hangs, on these I had uninstalled the older software and found no occurrences of the J.River entries in the registry.
The most annoying problem, evidently a known issue, which is the screen printing. I found one suggestion on your website that is allowing a few but no all to print the screen, that is using the right mouse menu to print.