Why is my paper coming out on A4 paper using pdflatex?
As mentioned above, this is difficult. However, the following has worked for some people (courtesy of http://physics.wm.edu/~norman/latexhints/pdf_papersize.html) When compiling a document using pdflatex (under the default installation of teTeX) the papersize (page size) may be set incorrectly if calls to the Vmargin or Vpage packages are used. The resulting page size will normally be set to an A4 default (210x297mm or roughly 8.24×11.71in) with appropriate margins. This behavior is caused by page defaults both in the pdftex configuration file and in the Vmargin style file. To correct this you should perform the following modification: In pdftex.cfg ($TEXBASE/texmf/pdftex/config/pdftex.cfg) remove or modify the lines: | page_width 210truemm page_height 297truemm | So that they correspond to your desired default pagesize.
