Hey ks12,
The Traditional DAQ VI "DIO Port Config" will not take input strings in the format of DAQmx. In order to use the switch module, you can use the NI-SWITCH API or the DAQmx Switch API. Both can be found on the functions palette in LabVIEW. Either is good to use for simple applications, however, the NI-SWITCH API is better for most cases. Check out some of the examples by going to Help (in LabVIEW)>>Find Examples and choose the search tab and search for "switch". You can see which driver it uses on the right-hand side of the list by the icon shown.
Hope this helps and thank you for choosing National Instruments!
Sincerely,
Gavin Goodrich
Applications Engineer
National Instruments