Sql-server – Cannot view sql server agent in sql server 2005

Have you start the service broker on MSDB ? You need the service broker on to be able to process mail queue.

Read this post on Stackoverflow. An other link that may help you is how to troubleshoot a queue in sql. You can also use this link to get your service broker up and running on MSDB.

Hope that those links may help you.

As per MSDN you can't install SQL Server 2005 Enterprise Edition on Windows XP. It's not supported. It seems that you can install client tools, BOL and some legacy tools, but not the database server engine itself.

So to answer your question: the SQL Server engine has very likely not been installed when you run setup, so neither you can connect to it, nor you can start any SQL Server service.