The installer DLL maintains information in the registry about each installed ODBC component. On computers running Windows NT and Windows 95, this information is stored in subkeys under the following key in the registry:
HKEY_LOCAL_MACHINE
SOFTWARE
ODBC
ODBCINST.INI
Because ODBCINST.INI is a subkey of the HKEY_LOCAL_MACHINE tree, the information about ODBC components is available to all users of the machine. For information about the registry, see the Win32® SDK documentation and the release notes for the ODBC component of the Microsoft Data Access SDK.