Matlab Scripting is included with LabVIEW. Go to the Mathematics palette and there you will find the Matlab Script node. In addition, there are several examples of Matlab useage.
Another idea is to access Matlab using its external interfaces that match with LabVIEW possibilities (like ActiveX for example) [http://www.mathworks.com/access/helpdesk/help/techdoc/matlab_external/matlab_external.shtml]. Anyway, your choice depends on what you are trying to do. Good Luck!
