Since you live in a country within Region 2, you'd probably be best off changing the dvd drive to region 2 setting.
Go to Device Manager, find the listing for your optical drive and right click on it, then click Properties. You should get a pop up screen that includes a DVD Region tab. Set your drive for Region 2 here (I believe your country, South Africa, should show up on the list).
Be aware that you can only change the region code five times, then it is locked in whatever region it was last set.
If you get a lot of dvds from outside your region, it would be best to use other solutions to play them, rather than change the region code. AnyDVD can remove the region code restriction, as can DVDFab Passkey.