Halif,
Allow me to walk you through some basic steps to verify your board is installed and working properly, then I'll explain how to start working with LabVIEW.
First, to verify proper installation and operation of the board and driver, refer to the steps in the Hardware Installation Wizard: http://www.ni.com/support/install/. Read through them. If you have everything installed properly, there's no need to perform the steps again.
Then, launch LabVIEW. Your board, the PCI-6013, is currently only supported in NI-DAQ 7.0 Traditional and earlier (http://www.ni.com/support/daq/versions.htm). Therefore, the DAQ Assistant and NI-DAQmx VIs will not work with that board. Try running one of the example programs in the Help>>Find Examples under Traditional NI-
DAQ. Then just search for the type of application you have in mind.
Good luck with your application.