I tested visual cadd 5 with the new 6.0 beta for linux. OS was Fedora Core 5. I used the default nt2000 bottle.
After installing Visual Cadd 5, be sure to install the latest patch set from the vendor. Without the patch, the program will crash if you try to save a file in GCD or Autocad file.
Everything seems to work. I did not find any problems at all. I am amazed.
Kurt