Ajit - I think You are good with your Drivers. You can check for Odbcad32.exe in both "C:\Windows\SysWoW64" and "C:\Windows\System32" folders.
It clearly says...
A 64-bit version of the Microsoft Windows operating system includes the following versions of the Microsoft Open Database Connectivity (ODBC) Data Source Administrator tool (Odbcad32.exe):
- The 32-bit version of the Odbcad32.exe file is located in the %systemdrive%\Windows\SysWoW64 folder.
- The 64-bit version of the Odbcad32.exe file is located in the %systemdrive%\Windows\System32 folder.