Car Parking at the ground is now for permit holders only, so it is a case of either street parking or using the matchday parking facility at Oulder Hill School. The school is located on the way up to the ground, on the left hand side, along Sandy Lane (it is then a 10 minute walk uphill to the ground). If you do elect to park on the street then be wary of the "residents only" parking scheme, as otherwise you could end with a parking ticket for your trouble.
From Football Grounds Guide