Right-click the classification that you created in the previous step and click New to create a new user-defined property. For more information, see To Create a User-Defined Property.
In Toolspace, on the Settings tab expand the Points collection and click Point File Formats New.
Select User Point File in the Point File Formats - Select Format Type dialog box and click OK.
To specify the user-defined columns, click an <unused> column heading to display the Point File Formats - Select Column Name dialog box.
In the Column list, select the user-defined property you created in step two.
On the Prospector tab click PointsCreateImport Points. Select the ASCII file you wish to import and select the Point File Format you defined in step five.