This is the latest transformation to move data between WGS84 and NAD83 in the Continental US and Alaska.
1. Download this file (hint - right-click Save link as...) WGS_1984_to_NAD_1983_CORS96_dbf.txt
2. Rename the file transforms.dbf
3. Be sure ArcPad is closed on the mobile device
4. Create a connection between the desktop machine and the mobile device using Microsoft Windows and Active Sync.
5. Copy the transforms.dbf file to the System/ArcPad/System folder on the mobile device.
6. Restart ArcPad and open your NAD83 ArcPad map.
7. Verify the datum of the ArcPad map, by tapping the Open Map menu / Map Properties / Projection tab.
8. View the transformation and its parameters, by tapping the Blue i button
9. Check carefully to ensure it matches as shown here.