Hi noobie99,
If I were you - I wouldn't disconnect any of the services to the property. Wait until you get a tenant and offer them the option of taking over the services - most people want a landline and cable TV and if you disconnect, it may be costly to reconnect.
Make sure the tenants take over the utilities and any other services they wish to have. Take meter readings on the day the tenants move in and contact the ESB and Gas supplier to inform them. They will want a contact number for the tenants as they have to confirm with them in person that they are willing to take over the accounts. Phone the utility companies again in a day or two to make sure the accounts have been transferred.
In cases where the tenant may not have had previous utility accounts, the ESB, for example, may ask the tenant for a deposit. This is for the tenant to pay, not you, the utilities are their responsibility.
If they decide to take over the cable TV, make sure you let them know that they are also responsible for the TV licence. This should also be stated in your lease, along with all their other responsibilities as tenants.