This might sound like a naive question, but here goes. I underexposed some color film (Kodak Gold 100). I normally get my film developed at the photo lab at Target (US department store). The ladies there are so nice -- God bless them -- and they do a respectable job processing the film. But I could never explain push processing to them, if their machines are even equipped to do such a thing. Is it possible to alter the DX coding of the film cassette to have the film pushed by one stop?