The Microsoft Project Configuration section under the Configuration tab in the Integration Manager for Microsoft Project, allows to select the Microsoft Project version which you are integrating with Web TimeSheet.
Microsoft Project 2003/2002:
Specify the Microsoft Project .MPD File that contains the projects you want to update.
Projects to be transferred from Microsoft Project 2003/2002 to Web TimeSheet must be saved to a Microsoft Project database file (.MPD file).
Microsoft Project 2007:
Specify the Folder for Microsoft Project Files that contains the projects you want to update.
Microsoft Project 2007 saves projects using the .MPP file format only, therefore you must select the folder where project’s .MPP files will be transferred to or from (not an .MPD file).
Note: To automatically use the same folder (2007) or .MPD file (2003/2002) each time, within the Integration Manager’s Configuration tab, save your settings to a configuration file, then select that file as the default Load Configuration File.