If you want to create ‘my computer’ as a toolbar in XP follow this procedure
If you click and drag your ‘my computer’ icon to the right side of the taskbar, just left of the light blue area, you will create a my computer taskbar.
Right click on task bar select Toolbars—>New Toolbar
Now you need to select My computer and click ok
This opens into a start menu-style cascading menu that will allow you to easily access any file in your system.