AutoCAD 2004, the default location of your data link files has
changed. For information about the default location of these files,
Locate Customized Files.
operating systems, the folders that are located under your profile
are hidden by default. To display these files, you may need to
change your display settings. On the Start menu, click Control
Panel Folder Options. In the Folder
Options dialog box, on the View tab, click Show Hidden Files and
your data link files
Click Start menu (Windows) All Programs (or Programs)
Autodesk AutoCAD 2008 AutoCAD
Click Tools menu Options.
In the Options dialog box, Files tab, click the plus sign (+)
to the left of Data Sources Location.
Under Data Sources Location, click the path name to view the
location of your data link files.
you make do not take effect until you restart the program.