Revelation Software have released a new RDK via the WORKS section of http://www.revelation.com which contains an updated LIST_USER_LOCKS window, along with supporting LIST_USER_LOCKS and RTI_LH_INFO procedures.
This utility has been tested with OpenInsight 9.4 and above and the Universal Driver 4.7.2 and Universal Driver 18.104.22.168.
Execute the window LIST_USER_LOCKS. The window will display a list of locked records. Each line item will display computer name, volume, table and record keys. With the Universal Driver 22.214.171.124 the computer name will include the network logon and process ID so that you can determine exactly which session holds the lock on a terminal server.