The way to import your iTunes Library is described in the link I provided above.
It works. I did it (and it wasn't even technically an iTunes library, it was a MediaMonkey library exported in iTunes format). If it's not working for you, you're doing something wrong. Without knowing what you're doing (saying "I did this" isn't describing the steps you took or the options you selected), no one can tell what you're doing wrong. Make sure the XML of your iTunes library is current. I don't know if iTunes does this automatically.
You need to describe what you did, what happened, and what's happening now in some detail for anyone to be able to follow along and offer help. Saying "I did it" and "It didn't work" doesn't give much to go on.
To start a new MusicBee library (wipe everything and start fresh), click "File->Library->Create New Library"
A smile is happiness you'll find right under your nose.