I did a draft for a brochure in .psd at 150dpi. Apparently it was approved and they want it exactly as it is. Since it is for printing, I need to make it at 300dpi. How am I going to do this? Can I place the psd in illustrator and save it as pdf and open the pdf file in photoshop and specify 300 as my resolution? Will this work? Desperately seeking help.