Thanks all of you guys reply.
I solved it by note 2036696 - SAP content server: Connection to a repository is not possible.
It is a very new notes released in July 2014.
it match my case, mentioned sqlod32w.dll and the new command syntax to register ODBC drive!
Anyone installing CS6.5 and new MaxDB version should refer to this notes to get rid of trouble~
Cheers~
Gary