To add a new data connection, double-click on the Enterprise object and select the relevant connection type (driver) to use for the connection, by clicking on it in the object window. Right select and select Add Connection.
In the Connection Name field, type the name of your connection.
NOTE: Depending on the connection type of the connection being created, certain values will need to be entered to specify how the data is accessed (some connection types will allow you to browse for data using the buttons to the right of the text boxes). Where paths or folder names are required for creating a Data Connection always use the Universal Naming Convention as opposed to using drive mappings. For example \Servernamecmydata as opposed to X:mydata where X is a mapped drive to \Servernamec. This will ensure that reports against this Data Connection can be run from any workstation regardless of drive mappings.