i made a PDF from my ps file in photoshop. I sent it to a printer. he gave me the proof and it was not the same color i had. he stated he couldnt change it because he is on a PC and the file i sent him when he opens in in PS switches to a bitmap. and everything ive done changes the colors to something else. How do i create a PDF from my ps file, to something that from a mac, any PC user can open and retain the info?