Word of warning.
Be careful not to allow the new version of Itunes to remove the existing music from your Ipod and then allow it to replace the music from your new Itunes libary, that is the new libary in Itunes which you have just re-installed which will have no music as yet.
I imagine in this situation, you'd like to add new music to your Ipod, well, I'm not sure what the first posts link will give you, but if this doesn't allow you to use the new edition of Itunes Libary to communicate with your Ipod in both dirrections, it is because of the copy write type protection which Apple support.
To get around this, another software is easily availabe which will allow you to plug in ANY Ipod and remove the music from it onto your computer as MP3 music. Then you can add this into your new installation of Itunes and then back onto your Ipod all together (i hope this make sence here).
So the software which I am using and works well is..
Media Widget
Available from here....
http://www.bootstrapdevelopment.com/showproduct.aspx?t=a
It says free down load, but this will only allow you to grab 10 songs at a time. So use it 1st to see how it works before you pay for it. this way you can check if you like it or not. Then if happy, pay the $30 au, and go for it. Takes just a few mins to set up.
Worth it I recon.