I am trying to attach an ms sql database. And I am trying to use sqlcmd utillity. But anytime I try this, I got:

Code:
SQLCMD

Sqlcmd: Error: Microsoft SQL Server Native Client 11.0 : Named Pipes Provider: Could not open a connection to SQL Server [2]. .
Sqlcmd: Error: Microsoft SQL Server Native Client 11.0 : Login timeout expired.
Sqlcmd: Error: Microsoft SQL Server Native Client 11.0 : A network-related or instance-specific error has occurred while establishing a connection to SQL Server. Server is not found or not accessible. Check if instance name is correct and if SQL Server is configured to allow remote connections. For more information see SQL Server Books Online..
of course, I have tried to find the server name and instance, with:
Code:
SQLCMD.EXE -L
and the answer was:
Code:
Servers:
    ;UID:Login ID=?;PWD:Password=?;Trusted_Connection:Use Integrated Security=?;*APP:AppName=?;*WSID:WorkStation ID=?;
How can I find the server name and the instance name then ?