"If you want Windows Explorer to open to the folder C:\My Documents, for example, right-click the Windows Explorer shortcut that you use to run the program and choose "Properties."
At the Windows Explorer Properties dialog box, click the Shortcut tab. Click in the Target entry box, and then press End. Add to the end of the existing line "/E, C:\My Documents". The complete line in the Target entry box should now be: %SYSTEMROOT%\EXPLORER.EXE /E, C:\My Documents
The /E switch tells Windows Explorer to open in the two-pane Explorer mode and the C:\ tells it to open in folder C:\. If you wish to have Explorer open in the C:\ drive, leave off "My Documents." If you omit the /E switch, Windows Explorer opens in a single-pane view."
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