Another DVD Burner Question

[Lestat]

I just installed a Pioneer DVR-110D DVD burner in my computer.

I went to play a store bought DVD and Real Player said it needed to download additional software. I clicked Ok and then it said it could not find the software for my DVD player.

No software came with the player, so I went online and downloaded what I thought was a driver for my unit. It seemed to install fine, but this didn't fix my problem with trying to play a movie. I'm getting the same thing.

Does anyone know what the problem might be (other than I'm an idiot with these type of things?). I'd really appreciate any help. Thanks.