Aged Photo Effect

Does anyone have any general tips on making an image look like an aged photograph? Overexposed and blurry, right? How do I do an effect that makes it look like there's a burned hole/discoloration in the image? Also, does anyone know any good brushes or sienna gradients for this? Finally, does anyone know any "old-timey" (1900-1940) looking fonts? I have PS7.