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When it asks "Download packages on the fly", if you choose "Ask me first", beware that this may cause bugs later. North American users will probably want "Letter" users elsewhere in the world will want "A4". It will ask you your "preferred paper size". Pay attention to what folder MiKTeX installs to! Note: Some versions of Windows will use C:\Program Files (x86)\MiKTeX 2.9 as the installation folder. When it asks you for the directory in which to install the files, we recommend leaving the default C:\Program Files\MiKTeX 2.9, but if you choose to change it, make note of where you change it to: you will need this information when installing TeXnicCenter. Some things to watch out for while installing: After the MiKTeX system download has finished, find the downloaded file, and double-click on it to launch the installer. Download the basic MiKTeX system by clicking the download button there. Open the panel with the title Basic MiKTeX Installer, 32-bit by clicking on it, or if your computer is 64-bit, choose the 64-bit option. On the MiKTeX download page, there will be several panels for the different downloads offered. For Mac users, you will need MacTex which can be found here. Click here to open the MiKTeX download site. To download and install MiKTeX, do the following: Note: The MiKTeX download file is large - 230 MB.
MiKTeX is the engine that does the typesetting work.