I can not rename keys using the wine regedit GUI. I had to create a .reg file in order to add the values I wanted to add, in this case Direct3D: Code: Windows Registry Editor Version 5.00 [HKEY_CURRENT_USER\Software\Wine\Direct3D] "VideoMemorySize"="512" I have 64 bits Ubuntu 10.10 and Wine 1.3.7. I did not find anything about this after a quick search in Bugzilla, is this a new bug?