Question : MS SQL Server only using one core on a 4 core box

I have an instance of MS SQL Server 2005 Standard and it appears that the sqlserver process is only using 1 core (1 thread) of the 4 core processor.  This is begining to cause some performance issues on our application.  Is there a setting somewhere in SQL to adjust this or to force the sqlserver.exe process to use all cores?

Answer : MS SQL Server only using one core on a 4 core box

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