old Windows 7 NB + new MBP 15" 2011 + iPhone4: data transfer

Hi everyone!

I’ve received my new MBP 15” 2011 a couple of days ago and now I’m “migrating” from my old Windows 7 laptop.
But I have a question regarding synchronizing my iPhone 4 with a new MBP (Mac OS). As I remember it’ll wipe all my data from iPhone if I synchronize it with a new PC.
I don’t have much problem to transfer my music library ‘cause I can just copy/paste it from old laptop, but what about my iOS software and, most importantly – contacts?

Please could anyone advise what is the best way to copy/paste my “iTunes” data to my new MBP?

Thanks!

 

Nobody knows?