ubuntu - username is not in the sudoers file. This incident will be reported

I am running Ubuntu 12.04 on my laptop using VMware Player. I am not sure why but I have an account called "User Account" in addition to my account that I usually login to use Ubuntu. Well that was just a side comment but basically all I am trying to do is install the ncurses library on Ubuntu. I have tried installing ncurses using the following command lines:

sudo apt-get install libncurses5-dev
sudo apt-get install ncurses-dev

When I tried installing ncurses twice using the above commands I received the following prompt in the terminal:

[sudo] password for fsolano:

where fsolano is my username,
so if you like the above line can be expressed more generically as

[sudo] password for username:

When I type in my password I receive the following message:

fsolano is not in the sudoers file. This incident will be reported.

or more generically,

username is not in the sudoers file. This incident will be reported.

So far I have tried enabling the root user account by following the instructions at this link: https://help.ubuntu.com/community/RootSudo

Here are some of the things the link suggested to do:

1. Allow another user to run sudo. Type the following in the command line:

   
   

   sudo adduser username sudo




2. lLogging in as another user. Type the following in the command line:

   
   

   sudo -i -u username




3. Enabling the root account. Type the following in the command line:

   
   

   sudo -i
   

   
   

   or

   
   

   sudo passwd root
   

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I have tried all of the above command lines and after typing in each command I was prompted for my password. After I entered my password I received the same message as when I tried to install ncurses:

fsolano is not in the sudoers file. This incident will be reported.

If anyone can help I would greatly appreciate it.