The nearest train station is Pokesdown which is roughly a mile from the ground and is around a 15 minute walk away. However, most trains arrive at Bournemouth Central, which is around a half an hour walk to the ground. Either try to get a train to Pokesdown or grab a cab (£7-£8). If you do arrive at Pokesdown Station (which is served by trains from London Waterloo), then exit the station (there is only one exit) and turn right down the main Christchurch Road (A35). Proceed for about 400 metres and then turn right into Gloucester Road. Dean Court is located down the bottom of this road. Thanks to Andy Young for providing the directions from Pokesdown Station.
Shamelessly cut and pasted from internet football ground website.