I have a will that I wrote through Legal Zoom. I assume I still need a Lawyer to probate that will if the need arrises - is that correct?

Good question.  If the estate requires a probate proceeding, then you will likely need an attorney to help you with the process - although it is something you could possibly do on your own with some research and confidence.  If the estate does not require a probate proceeding, then you will not need to go through the probate process; however, you may need an attorney's advice as to whether probate is necessary.  In any event, you are correct that a Will does not take the place of probate, it merely describes how you desire to dispose of your assets.