Why would you have to install hardware to transfer data from the LabVIEW software to a software file on the same system? That would be crazy.
You would need to look at either using CSV files or using something like the Report Generation Toolkit. Depending on your specific version of LabVIEW, this toolkit either comes with LabVIEW or can be an addon. The CSV functionality is included with all versions of LabVIEW.