multiple assemblies error

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C#

Connector

visual studio 2012 (ultimate) with mysql c# beginner's "journey" part 1:

Hi, I've downloaded the MySQL community workbench... and I'm trying to create "my1stMySQLdbApp" but have this error

Error 1 The type 'MySql.Data.MySqlClient.MySqlConnection' exists in both
'c:\Program Files (x86)\MySQL\Connector NET 6.7.4\Assemblies\v2.0\MySql.Data.CF.dll'
and 'c:\Program Files (x86)\MySQL\Connector NET 6.7.4\Assemblies\v4.5\MySql.Data.dll'

...

the code I've used is

try
{
    string myConnection = "datasource=localhost;port=3306;username=root;password=7777";
    MySqlConnection mySqlConnection = new MySqlConnection(MySqlConnection);
    MySqlDataAdapter myDataAdapter = new MySqlDataAdapter();
    //myDataAdapter
}

It was not a surprise, as when I finally found and added the add reference and selected (searched for) mysql and added (ticked) MySql.Data / MySql.Data.CF / MySql.Data.Entity, several were listed

http://i.imgur.com/udZXyOa.png[^]

<img href="http://i.imgur.com/udZXyOa.png">http://i.imgur.com/udZXyOa.png[^</img>]

Do I / Should I delete one of the assemblies? Contents of C:\Program Files (x86)\MySQL\Connector NET 6.7.4\Assemblies indicates 4 collections (RT, v2, v4, v4.5)

I'm very new to all this, and would like to know why this is happening (did I even need to install MySQL on my laptop? Already had a / some SQL services running, but not sure what they're for) and how to configure VS / MySQL to fix.

Many, many, many thanks for anyone that tries to help. Back to google-fu!