Add Context Menu for a FileType

Eg:

Windows Registry Editor Version 5.00

[HKEY_CLASSES_ROOT\\.osd]
@="SoftGrid.osd.File"
"Content Type"="application/softricity-osd"

[HKEY_CLASSES_ROOT\\SoftGrid.osd.File\\shell\\UpdateOSD]

[HKEY_CLASSES_ROOT\\SoftGrid.osd.Fileshell\\UpdateOSD\\Command]
@="\"C:Program Files\\AddTabsToOSD\\addTabsToOSD.exe\" \"%1\""

The above reg key will add UpdateOSD menu for .osd file type