When using SQL Server Management Studio you might want to copy data from one DB to another (using just a SELECT and INSERT statement)

It’s so easy you won’t believe it

sp_addlinkedserver @server='192.168.123.456', @provider='SQLNCLI',    @srvproduct='',@provstr='User Id=sa; Password=are-you-crazy-to-use-sa' insert into [192.168.123.456].MYDB.dbo.tblRecords select * from MYDB.dbo.tblRecords

and when you are done

sp_dropserver [192.168.123.456]

References:
sp_addlinkedserver [...]