No. He cannot be found guilty by a criminal court until he is removed from office by impeachment. And once he's impeached, he can't pardon himself.
I'm no legal expert or anything, but I believe that's why Nixon resigned, and then Ford pardoned him for "any crimes that he may have committed as President" or something along those lines. Then people believed that he only stood down so that Ford could become President, so that Ford would owe him, so that he would then pay him back by pardoning him... I wasn't around back then, and I don't know all that much about complex legal matters, but I believe that was roughly the gist of what happened.
I truly and honestly believe that Ford pardoned Nixon because he believed it was the right thing to do. Ford knew it would most likely cost him the election, but he did it anyway.
I truly and honestly believe that OJ is still looking for the real killer.
