You can transfer the GDP data cache using the network instead of the serial port. To do this, place the following files from the GDP into an empty folder on your computer: FLDDATA.CAC INDEX.CAC CACCNVRT.EXE In the empty folder you created, double-click on CACCNVRT. The binary files flddata.cac and index.cac will be combined to create an ASCII file: flddata.prn . This is a RAW file and should be renamed to have .raw as its extension.