-HELP-How do I put my songs that I've downloaded onto an ipod nano?
 

I seriously don't know, I've gotten onto the Lime wire thing and everything, and I've plugged in my ipod, but nothin is happening.

You'll have to make sure that your songs are added to your iTunes library first;)
Check out the sticky below!
Transferring music to iPod & iTunes

When you go into your library of music press explore and right click the file press open with itunes and it automatically add it to itunes which then updates your ipod. Atleast that's how I do it.