Do you have an Ace hardware near you? If so and you don't like ordering online, go to their website and under fencing there is an electrical fencing section. Get a basic small animal energizer (since its only for your dog, you don't want one thats designed for a 10 mile long fence), they also sell the wire and I believe they sell the insulators as well. As stated before get a good grounding rod (a piece of copper piping works well too if you have any kicking around). If you write down the SKU numbers or print the pages and bring it to the Ace hardware store they can order it for you and have it delivered to the store and you wont have to pay shipping.