Try this, James.
Set The Default Folder That Opens When Windows Explorer Is Run
Windows NT 4/2000/XP
Let's suppose that you want Windows Explorer to open in the root folder of Drive C:. Right-click the Windows Explorer shortcut that you use to run the program and choose Properties. When the Windows Explorer Properties dialog box opens, click the Shortcut tab. Click in the Target entry box, and then press End. Add to the end of the existing line /e, c:\. The complete line in the Target entry box should now be: %SystemRoot%\explorer.exe /e, c:\. 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 at My Documents, you would use %SystemRoot%\explorer.exe /e, c:\My Documents.
If you omit the /e switch, Windows opens in a single pane view.