I'm curious why you've
posted about 2 identical questions in quite different sections of the forum on the same day.
Are you a Bearshare/Limewire user? Is your Operating System Linux?
In order to upload you need to have share folders. For LW (& I'm not sure about the Linux version here), then go to LW's menu Tools-Options & Sharing. Press the Add button & select a folder to share. Then press the apply & ok buttons.
Hope this helps to explain it for you. See image below.