You can, but there's no need for the preposition- it doesn't add anything to the sentence. We often use reundant prepositions, and I would say this falls into that category.
BTW, Allei, could you post this kind of question in the thread in future as it makes it easier to navigate and look back at the thread. I'm afraid that there are so many questions goingon that I sometimes have to reread things and find it easier if I don't have to use the search box. Thanks.