If you are using Windows XP, and assuming your library is in the default location ("My Music"), click the "Start" button and then "My Music." Single click the iTunes folder you will see, so that it is highlighted. When you do that, a link will appear on the left that says "copy this folder." Click that, and in the box that appears highlight the entry corresponding to the external drive. Then click "copy."
You can also accomplish the same thing via "My Computer" (in a similar manner) or "Windows Explorer" (by clicking and dragging, as was suggested above). If you are not particularly knowledgeable about computers, though, I would not recommend using Windows Explorer (which is located under Start/All Programs/Accessories), because a slip of the mouse can cause folders to be moved to unintended locations that may not be immediately evident.
Regards,
-- Al
You can also accomplish the same thing via "My Computer" (in a similar manner) or "Windows Explorer" (by clicking and dragging, as was suggested above). If you are not particularly knowledgeable about computers, though, I would not recommend using Windows Explorer (which is located under Start/All Programs/Accessories), because a slip of the mouse can cause folders to be moved to unintended locations that may not be immediately evident.
Regards,
-- Al