I know this doesn't help a lot - but from what I see you have done everything you needed to. I have no idea why would end up with such error. Since you cropped your window snapshot I can't certainly say that imports are in file which is on the same project as references libraries (as that is only thing that springs to my mind in what I see). I can't see which file is selected In package explorer...
If that is of any help - it seems that you are on the right track...
On which OS are you working ? On Seven you may have problems to access some directories if you are not executing Eclipse as Administrator... I see that your workspace is in "C:\". Try to move your workspace in your personal documents ("C:\Users\YourName\Documents\....").