You can see the list of installed languages by running following select. Most likely Portuguese is included

SELECT * FROM sys.syslanguages

You've to configure the language you want Sql Server to use. You can set default language for all newly created logins with sp_configure system stored procedure. For existing logins you can change the language with ALTER LOGIN. The SET LANGUAGE can change language for current session. See BOL 2005 for details.

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>I installed SQL SERVER EXPRESS in my computer and it brings error messages in Portuguese(mslangID=1046). In a client I installed SqlServer Standard and it doesn't have these messages in Portuguese. Is there a way to copy these messages from one to another?
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>I tried sp_addmessage but it allows only messages with ID higher than 50000.
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