Connecting to a MSSQL Express 2005 Instance when MSSQL 2000 is also installed on the same server

Ihave MSSQL 2000 and MSSQL 2005 Express on the same server.  I need to connect to the SQL 2005 instance via command line to run a script against the DB.  The instance name for the 2005 DB is Teller. Here is the command that I tried but it ran it against the 2000 instance rather then the 2005 instance.
C:\Documents and Settings\stevemize>sqlcmd -s shelby\teller -i "c:\Documents and Settings\stevemize\SetAutoCloseOff.sql"
Any assistance would be greatly appreciated.
Thanks,
Steve
 
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