Easy enough to do. Since you are using DesktopX (I'm assuming by your post), you just need to create a shortcut object with the file path = "C:\WINDOWS\explorer.exe" and in the arguements line include the following "/n," and of course exclude the quotes. This give you the equivalent display in DesktopX for your My Computer Icon on the standard XP desktop.  

Just open the properties tab of your existing object or start with create a new object and the properties of the object will display. On the general tab (the one that opens) you will see object type at the top portion and to the right of that a change button. Click the change button and at the top hit the scroll down box and select shortcut. Select the file shortcut type and below that is the arguments box (used to pass things such as "/n," to explorer or whatever program your object is set to launch). It's that easy. You can accomplish the same thing by opening your start panel, selecting run, and typing "explorer /n," no quotes of course. It's all very easy once you get the hang of it.  

Ok. You're welcome. Glad I could help.