Tip:
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Go to the Minecraft Forum and type in optifine.
Go to page 1 and click on the download link.
Use 7zip or winrar to open the file.
Then go to Start and search for %appdata%. Click .minecraft, bin and then use 7zip or winrar to open your minecraft.jar folder.
Then copy all the files (use Crtl A) and drag them into your minecraft.jar folder.
Remember to delete META INF or this will not work.
Start Minecraft and you should now have more options in your setting, this will help you run Minecraft much quicker.
Thanks 4 watching.