This is an example of how you would use ODBC to connect to an access database.
Open 32 bit ODBC (The 32-bit version of the Odbcad32.exe file is located in the %systemdrive%\Windows\SysWoW64 folder.) and create a new data source
Select the appropriate driver and set up the details
When creating the report connect via the ODBC (RDO) connection
Within CRM and Crystal Manager add the report and view the connection details
Copy the servername and click on the config tab in crystal manager. Set the value in one of the settings to match the expected crystal connection.