So you don't have a Ds and you want Pokemon Black and White. Well today i will show you how to get it for computer or laptop so first of download this
[ Register or Signin to view external links. ] Now follow these intructions heres a video

1. Open either Pokemon Black or White with NO$GBA

2. You should get an error and it should say to try and reload but dont

3. Open up the Codes folder and open the txt document

4. There should be a list of code there, Select the first code (Long code for either Black or White depending on what game your playing)

5. Go to Utility then Codes, Remove the 2 Current codes in there then hit ADD NEW

6. Paste the Copyed code into there and Name it whatever you want for example (Black1 or White1)

7. Check the Action Replay DS Box and hit OK

8. Go back to the txt document and Copy the second code (Short code for either pokemon black or white depending on what your playing)

9. Hit ADD NEW again in the Cheats box and paste in that code

10. Name it whatever you want for example (Black2 or White2)

11. Check the Action Replay DS box and hit OK

12. Make sure both of the Boxes for (Black1/2 or White1/2 are checked) then hit OK

13. Go to File then Reset Cartridge.

14. Enjoy playing Pokemon Black/White Full American Version!
+Rep if this helped