If you want to use the new Callsign Lookup feature for any of the WB3W programs then download the l_amat file direct from the FCC site at

http://wireless.fcc.gov/uls/data/complete/l_amat.zip

Once downloaded and extracted the file you want is "EN.dat".

Copy it over to "C:\WB3W Logging\WB3W PAQSO Log" folder, or what ever log from WB3W that yo are using, and then, once it is in that folder, open the logging program.

Select "File" on top menu, and select the option to "Create Call Lookup File".