Clicking on the Drills button in the Netex-G window opens the Drills dialog box which allows you to specify a drill file and which levels the drill file should span. For details on using this dialog box, click on the Help button.
If your drill file is not in Gerber format, you may use the Drill2Gbr utility to convert the drill file to a Gerber format. To open the utility, click on the Drill2Gbr button in the Drills window. For details on using this utility, please click on the Help button.