Ok this time I actually went into XP instead of trying to remember what to do.
Sorry, Im pretty lazy sometimes.
I think this will work for you.
%SystemRoot%\explorer.exe /e,
This opens in the my computer section with all drives and user folders listed.
I tried what I told you to do and guess what? It did exactly as you said and I didnt like it either,
At first it looks a bit like what the my computer icon shows but you will see the differences.
If you want yours set up like mine you can change to details and then select the details that you would like to see under the view|choose details menu and set it however you would like.
You can also change the column width by grabbing the little line at the edge of the column name at the top and pull it to the width you desire.
Once you have it the way that you want you can use tools|folder options|view and apply to all folders to keep it the same.
Also you are correct by putting the E: at the end will highlight the E: directory.
You can also create extra shortcuts and then create custom paths to goto any place that you want with only one click.
eg name the shortcut Santa and use the line
%SystemRoot%\explorer.exe /e,e:\documents\letters\letters to santa
Below is a link to some other examples that can be used
http://support.microsoft.com/kb/314853
If you need any more help please post back and I promise I will do a better and faster job of answering you.