Importing XSD to Create a Msg Type.

Hi All,

Can anyone plz tell me how to create a msg type based on external XSD.I hav gone thru help.sap.com. there it is mentioned for Data Type.It is given that to go for Tools->Import XSD.but i din't find any such option there.Instead, i hav gone for creating External Definition and was successful in creating a DataType using External Definition.But to my surprise, the created Data type is not listed under Data types.Instead it is listed under External Definitions. This is for Data Types.But i need for Message Type.Plz help me out as i hav very severe dead lines.

Thnx in Advance.

Anil.