When we right-clcik on ne file/folder, many items r appeared, there r called "Context Menu Items".
U can remove unnecessary or unwanted items using Registry!
Start -> Run and type regedit and expand "HKEY_CLASSES_ROOT".
Under this key u'll find:
* -> Shellex -> ContextMenuHandlers
In this key u can remove the items, which u want.
U can do the same with File, Folder, Directory, Drive, etc.