To configure Explorer to appear from the My Computer icon, do the following:
Run the Registry Editor (REGEDIT.EXE).
Open HKEY_CLASSES_ROOT\ CLSID\.
Select Find from the Edit menu, and search for My Computer. If you can't find it, open the key labelled {20D04FE0-3AEA-1069-A2D8-08002B30309D}.
Right-click on Shell, select New and then Key. Type Open and press Enter.
Right-click on Open, select New and then Key. Type Command and press Enter.
Click on Command, double-click on (default), type explorer.exe in the box, and press Enter.
Close the Registry Editor.
Click on the desktop, and press F5 to refresh the desktop so that this change will take effect. (More information.)
Note: If you can't find it, and have renamed My Computer to something else, try searching for the new name.
I just did this, and in put me in a detail mode from the my computer icon. If a double click my computer, it defaults to c:, If I right click on my computer and select Explore, I get the view that I have selected.
Hope this helps.
dennie