This handler adds thumbnails for: *.pas *.txt *.ini *.dfm Files. Run the Register batch file and run explorer in Thumbnail View and browse to one of these file types. To unregister run the UnRegister batch file. To Minimize the size of the DLL open the: {EasyNSE}\Include\EasyIncludeHandler.inc file and uncomment out {$DEFINE NO_PROPERTYSHEETHANDLER} and {$DEFINE NO_MENUHANDLERS} Define. This will remove the PropertySheet and Context Menu handlers from the build and the Forms unit will be excluded from the DLL.