Ryan,When using ArcPad 10 with ArcGIS 9.3 the version 8.0 ArcPad Data Manager is installed. This version supports related tables.All you need to do is the following:1. Create a 'one to one' or 'one to many' relationship class between a feature class and a geodatabase table.2. Include both the feature class AND the related table in the map document used for checkout.3. Using the ArcPad Data Manager toolbar, 'Get Data for ArcPad'.4. Select the action 'Check out for disconnected editing' for your feature class (you will see your related table included next to the feature class name).5. Complete the check out.The resulting axf file will contain the feature class and the related table, including the necessary components to make the relationship work. No additional customization necessary by you. When you check the axf file back in, all related records will come as well.Hope this helps.