Hi, I am asking the file structure for reading .PST files. Becuase I have to open .PST files using File Handling in VC++ in binary mode, and I have to read the messages and display on the correcsponding Rich Edit Control. If you know the structure of .PST file, that helps alot to me. Because structure contains the size of each column like sender name, receivers name, message and so on. knarasimharao