The process is quite straightforward once there is a will. Look up the Probate Office on the Internet and they will give you all the information you need during the process. They are very helpful, the whole process should take less than 6 months, depending on the waiting time for an appointment in the probate office. You must have up to date details on any/all financial accounts, a valuation for the house both in 1009 and currently, and be ready to spend a day in Dublin going from the probate office, to the stamping office (you'll need to hand over about €500 for this), then down to O'Connell St. to the Revenue office, then back to the Probate office with all of the receipts and stamped documentation from the various authorities. Of course, you can get a solicitor to do this but why not try it yourself?