ODBC admin tool

http://support.microsoft.com/kb/942976 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. The Odbcad32.exe file displays the following types of data source names (DSNs): System DSNs User DSNs