It is not possible to open a RAR file without an archiver. If you do not want to use WinRAR (which has an unlimited trial version free to download), the best option on Windows is to use 7-ZIP (totally free).
I'm no expert but some of my statements are saved / downloaded as .zo or .do file extensions. I change the .zo or .do to .pdf and that seems to work.
you can use other programs also to open a rar file
Use WinRar to open the file.
Winrar or 7zip
Adobe Reader is not for opening rar files. It is a compressed file which can contain one or more files. You need a piece of software like WinRar or Winzip to open it. There may be files in it that can then be opened by Adobe Reader.
You can use WinRAR from http://www.rarlab.com
you can download winzip that is an .exe that can do that and you can also download winrar that also can open zip files
Start the software. Usually there is an open button or a file menu. If there is no open button, go to file. Click open.
enjoy, u have to have winrar to open the file :/ just google winrar See link below to find the algebrator for free
There are several tools available that can help you in cracking the password of winrar,file I know its time taking but it what more I can say it worth.
In your minecraft.jar file, (which you need winRAR or 7-Zip to open with), delete the META-INF file.
Use WinRAR to open the Minecraft.jar file, and in that, you will find a file called Terrain.png. Open it up with your prefered picture editing software (I prefer Paint.Net) and edit away! Make sure after you are done editing, save and drag the picture back into the Minecraft.jar file.