Limewire songs to iTunes? (I'm new, help!)

[Clovernote]

I'm new to the whole Limewire thing and quite frankly I can't work with computers to save my life.
So I've downloaded two songs on LW that I want on iTunes. On iTunes, they're automatically put in my 'shared files'. When I try to Add Files, I A. Can't find the song in there ANYWHERE or B. It says 'searching for file' and, quite frankly, isn't doing so.
Please, can someone explain to me as simply as possible, exactly what to do just to get two freaking songs on my iPod? For God's sake, I'm fed up and tired.