IPhone sync problem with new problem

Hello,
I had an old I-phone which was perfectly synchronizing with my old laptop. Recently I have to buy a new laptop since my old laptop was damaged and it was un-repairable. I have heard from different sources that should I connect it the new laptop with my old I-phone I will lose my I-phone data.
Is there a way to save the data and then sync it with the laptop PC.
Kindly help me on this problem.
Dixon Chapman
