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I got this computer from someone and it had ubuntu installed on it. I like it but I find it complicated and I have been trying to download and every time I try to install something an error comes up

Archive:  /home/singh/Downloads/Shockwave_Installer_Full.exe
  End-of-central-directory signature not found.  Either this file is not
  a zipfile, or it constitutes one disk of a multi-part archive.  In the
  latter case the central directory and zipfile comment will be found on
  the last disk(s) of this archive.
zipinfo:  cannot find zipfile directory in one of /home/singh/Downloads/Shockwave_Installer_Full.exe or /home/singh/Downloads/, and cannot find /home/singh/Downloads/Shockwave_Installer_Full.exe.ZIP, period.

Please help me uninstall ubuntu and get Windows back or help me get these downloads to work.

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Please consider a more descriptive title. This site has thousands of questions and someone browsing won't have any idea what you question is until they read the whole text. – mfisch Nov 24 '12 at 4:20

If you want a .swf viewer on Ubuntu you should install and use Gnash. It's available in the repositories.

If you want Windows installed on the computer you will first have to go and buy a copy. (You already have a better operating system for free however). Some Windows programs will run OK under Ubuntu but you will need to install Wine to do so.

Anything that ends in exe is probably a Windows file. If you want to find programs to install use the Ubuntu Software Centre. I'd recommend that you investigate the software centre first before you give up on Ubuntu.

Also have a read of Linux is not Windows.

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