jack up car, place on axle stands,remove oil filler cap on top of engine, place container under sump, remove sump plug and allow oil to drain. this would be better if engine is warm, to allow oil to drain better. remove oil filter and replace with new one, when oil drained, replace sump plug, lower car back on its wheels and fill with correct amount/type of oil,start car and run for a few minutes, turn off and allow oil to settle and check level.top up if required. give reg. number to motor factors and they will sell you right oil filter & oil for your car.
hope it helps, July 2010