Here it is:
To repair the Atx200X.mdb file (2006 and later)
Follow the steps in Document ID: 1761 to make sure that file extensions (such as .mdb) are visible.
Right-click the appropriate ATX desktop shortcut, and then click Properties.
On the Shortcut tab, click Find Target.
Double-click the Database folder.
On the View menu, select Details.
Verify that this folder contains an Orig-ATX200X.mdb file as well as an ATX200X.mdb or CompactATX200X.mdb file. If you do not see an Orig-ATX200X.mdb file, contact ATX technical support at (800) 638-8291 for assistance.
Right-click the ATX200X.mdb or CompactATX200X.mdb file, and then click Rename.
Rename the file to ATX200X.old or CompactATX200X.old (as appropriate), and then press ENTER.
Right-click the Orig-ATX200X.mdb file, and then click Rename.
Rename this file to Atx200X.mdb, and then press ENTER.
Run the REPAIR.EXE program utility. Refer to Document ID: 43 for instructions.