The Joy of Sync
Except for a few rare cases there is probably a solution out there to sync at least your calendar and contacts between your computer and mobile phone. However these solutions are rarely free. Even if the software is freely available from your manufacturer, you'll probably need to buy a data cable.
A good synchronization takes a little time and effort — the first one will be especially difficult. You'll have to reconcile all the data on your phone with whatever is stored in your PIM, a painstaking task unless your PIM data is so complete, you can confidently tell the sync application to overwrite all the data on your phone.
We cannot vouch for the ease of use or effectiveness of each of the applications featured here. However should a sync application work well, subsequent synchronization of new data and minor changes should be fast and painless.
Once you're used to this sort of syncing, your phone becomes a much more powerful tool. You won't think twice about entering a new appointment or contact into your phone knowing full well it will show up on your computer later as well, and vice versa.
If you decide that synchronization is not worth the effort for whatever reason, Motorola, Verizon and selected phone resellers offer services to back up your phone data and restore it to a new handset. This could be helpful should you decide to switch phones but not want to invest much money or effort into moving your contacts and other data yourself.