Hi Ali;

You need to install a program like 7Zip <http://www.7-zip.org/> which will
allow you to untar and install the *.tar file.

7Zip unpacks tars, rars, zips and their own proprietary 7z compaction
methods.

*7-Zip* is *open source* software. Most of the source code is under the *GNU
LGPL* license. The unRAR code is under a mixed license: GNU LGPL + unRAR
restrictions. Check license information here: 7-Zip
license<http://www.7-zip.org/license.txt>
.

You can use 7-Zip on any computer, including a computer in a commercial
organization. You don't need to register or pay for 7-Zip.

Just as R is open source and under a similar license.


Jan


On Sat, Nov 13, 2010 at 9:02 AM, Ali Zanaty <zanaty2005@yahoo.com> wrote:

> Dear All R Users:
>
> I am trying to install R into my computer. I downloaded R-2.12.0.tar and
> the old
> version R-2.6.2.tar. But when I tried to double click on the the file(s) it
> did
> not install the program, it says Windows cannot open this file:
>
> File: R-2.12.0.tar.gz
>
> To open this file, windows needs to know what progrm created it, ....
>
> What do you want to do?
>
> Use the Web sercvice to find the approperiate program
> Select the program from a list.
>
> I think I  am missing something, but I do not know what it is?
>
> Thanks for your helps.
>
> Ali
>
>
>
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>
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