Where is the oil filter on a volkswagen polo 1.2 2003?

It is at the front of the engine and it is a paper type that resides under the domed fitting to the left of the engine that , I suppose, looks a bit like a distributor but without any leads coming out if it. it has a fairly large hexagon top to unscrew it with. Do you know how to drain the oil from the same car - does it require a replacement sump plug or can it be reused? John