Right, try and calm down first of all.
Were obviously not thinking in the right thought processes to get this to work.
We know for sure now, that its not accepting the RealTek drivers.
We will track down the right ones!
With computing, its all about the process of elimination, until you get to the culprit.
Plus, you know what? If you have a bit of money (doesn't even have to be much), buying a proper PCI sound card (very cheap sometimes for even a reasonable good one) wil work wonders for your PC and will have better sound quality to boot.
And, you'll easily be able to install the drivers