asp.net Connection issue

While you are using the Add Generated Item Wizard, an exception occurs:

IM004 : [Microsoft][ODBC Driver Manager] Driver's SQLAllocHandle on SQL_HANDLE_ENV failed.

Generated when the ODBC driver manager is unable to create an instance to the required driver, the driver of the database.

Resolution

Add the PATH to the ODBC driver client DLLs.

Ref :http://msdn.microsoft.com/en-us/library/aa577813(v=bts.20).aspx