(This was copied from GreyVulpine's instructions at: http://pastebin.com/1knuj6Zh ) Download the minecraft.jar from minecraft's site, here: https://s3.amazonaws.com/MinecraftDownload/launcher/minecraft.jar Download it to your desktop. Put it in a folder where you can access it easily. In the same folder, right click inside, choose new -> text document Double click to open up the text document in notepad, paste these two lines in: java -Xmx256M -Xms256M -cp minecraft.jar net.minecraft.LauncherFrame pause Go up to File -> Save as Change the file type to "all files" and save the file name to anything that ends with .bat, eg Run.bat. Run the .bat file by double clicking on it.