Run pbrush in command, its the same program : P
pbrush works, but it just runs mspaint.exe; there is no pbrush.exe anymore
pbrush works simply because of the entry in the ubiquitous App paths key:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\App Paths\pbrush.exe
which makes it an alias for MSPAINT.EXE
basically, I wasn't clear as to what I meant.. you can run pbrush, and I do believe that it's OLE and DDE server names are still PBRUSH, but there is no executable called PBRUSH anymore.