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Possible Duplicate:
How to install software or upgrade from old unsupported release?

I'm using ubuntu 9.04. From last few days I'm trying to install a virtualbox,but i can't. I went to this link for virtualbox. Found the virtualbox for my version. After downloading it in xp i restarted my pc and opened ubuntu. While installing by package installer there is a problem. But the status giving a massage everytime I'm trying to saying "Error: Dependency is not satisfiable: libcurl3 (>=7.16.2-1)". Here is an icon named "install package" but its hidden. I don't know what's the problem.I'm new to ubuntu,pls try to help me.

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marked as duplicate by Anwar Shah, jokerdino, Mik, Tom Brossman, Takkat Sep 23 '12 at 16:51

This question was marked as an exact duplicate of an existing question.

First open the place where you downloaded Virtual Box package.deb file.

Open terminal


sudo dpkg -i 

Drag and drop virtualbox package.deb file into terminal with using mouse. Come back to terminal and press enter. Give password and virtualbox will be installed.

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I don't know how to use there any way to learn terminal? – debanjan Sep 24 '12 at 4:20
It is very simple.Pres ctrl+alt+t to open it. You have just write command given above. – K.K Patel Sep 24 '12 at 8:30

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