08-09-2013 06:52 PM
Well, as worded, there are many answers...for it depends on where they are coming from (e.g., another device, a CSV on your computer, Outlook, a server somewhere, etc.) and exactly what you want to sync them to (e.g., your BB, with Outlook, to a server, etc.). So, I'll give you some links, and maybe you can either choose the one that works for you, or provide additional details so that we can understand your request better:
Good luck and let us know!