Windows Registry Editor Version 5.00

[HKEY_CLASSES_ROOT\.dll]
"Content Type"="application/x-msdownload"
@="dllfile"
[HKEY_CLASSES_ROOT\dllfile]
@="Application Extension"
[HKEY_CLASSES_ROOT\dllfile\Shell\Register\command]
@="regsvr32.exe \"%1\""
[HKEY_CLASSES_ROOT\dllfile\Shell\UnRegister\command]
@="regsvr32.exe /u \"%1\""