Find the GPS98 row in the Export Directories table, click on the 'Browse' button to find and
select the directory where you wish the GPS98 rte files to be written on export.
Go to the 'Settings' tab and press the 'Save Config Options' button.
Shut down, and restart Fsbuild for the new settings to take effect.
Go to the Options/Navdata page.
Press the 'Export Fsbuild2 Navdata to GPS98' button.
Start the GPS98 database Utility (this is a utility within GPS98, not part of Fsbuild)
Select the 'Import' button.
Browse to you FSBuild directory, and Import both files separately (airports.gps, navaids.gps). One is to Import Fsbuild Airports. The other is to Import FSBuild Navaids. When Complete close the GPS98 database utility (you must do this step before using FS2000/02).
After the GPS98 Import is complete, return to Fsbuild.
Go to the 'Build Options' menu, and select the 'GPS98' menu item.
Build the flight plan, the flight plan will be exported to your FS2002/FMCWP/Navdata/FlightPlans folder.