How i run TOAD 8.5.0.50 free with Oracle 10g Express Edition

Hi Experts,
    I need use TOAD 8.5.0.50 free with Oracle 10g Express Edition and the toad show me the error ORA-28547 server conection fail,  My tsname is OK,  and i can connect with  principal  page of Oracle Express.  Thanks a lot.
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jlguerraAsked:
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johnsmith1962Commented:
Can you tnsping the listener successfully?
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DavidSenior Oracle Database AdministratorCommented:
You need to define TNS_ADMIN for TOAD.  Check for "SET" on Windows or "echo $TNS_ADMIN" on UNIX.
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jlguerraAuthor Commented:
the toad and Oracle Express run on windows
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jlguerraAuthor Commented:
Please dvz how i set on windows,  it´s only "set directory" ?
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DavidSenior Oracle Database AdministratorCommented:
At a command prompt (cmd.exe), one is able to view all environment variables.  The command SET by itself will display what's there.  In order to set TNS_ADMIN, you need to go into the Control Panel | Performance & Maintenance | System |  Advanced | Environment Variables | User settings.  Create a new value for TNS_ADMIN, providing the full path to the directory that contains your tnsnames.ora.  You'll need to log out and back in to use it.
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jlguerraAuthor Commented:
Thank you men,  but i reinstall the aplication TOAD and work for me,  but your solution too is right
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