M using iPhone 4,my iTune is in my laptop,m planning to buy new laptop so if I'll connect my apple to new lapp?

M using iPhone 4,my iTune is in my laptop,m planning to buy new laptop so if I'll connect my apple to new lappy then all cydia apps n all things will delet n mire stuff is in my phone,so is there any way to save or not to change all this thing aft connecting to new lappy !!! Plz help