In Acrobat X, you can rotate a PDF using the Tools > Pages > Rotate command. Or, you can do this in the Pages navigation pane by right-clicking and selecting Rotate.
Thanks for the quick answer! I`ve found the toolbar and the rotate commande, but I cant use it. I see them, but they do not respond whan i "click" them, can it have anything to do whit what type of document it is? When I scan them I want to have the document in PDF/A-1 standard, that is perhaps why it doesn`t work? It beats me! ( As you probably have understod I`m not the "computer-hacker" guy!)