Off topic - IPOD question

I

incog

Guest
Hello. I was hoping one of you experts would be able to help me out.

Short Story:
I have an Nano. I had my ipod songs which were 99% cds I uploaded + 2 download tracks if itunes. Computer crashed and I had to buy a new one. The songs are still on my ipod but obviously I have lost my playlist.

Question:
The next time I upload new songs to a new playlist and then synch it, will it overwrite the songs I've already got on the ipod?, or just add to em?

Thanks for any help. :)
 
I just remembered I posted this and forgot to get the answer (I checked regularly for the first half hour. and then... *blank space widens*

Thanks metalhead!