Ok so I have had Limewire for a bit, been using it to download songs. Still a lot of this escapes me!

I use the free version, for now, as I am still not sure of it. How do I stop people from downloading the songs I have? I have looked for some form of button, or option, but have yet to find one!

On the Monitor tab there is a chat button, but I can't seem to figure out how to make it work, how to chat with someone!

Skins, I have downloaded a few skins, but there are not many I like. Are the people of lime wire planning to make and release more? I like to change the looks of my limewire often, right now I have the christmas skin up! I wish I knew how to make them!

How can I upload an avatar picture to be used on this forum!?

Hopefully someone here can help me cause these questions have been driving me nuts!