Cannot make MantainancePlans (Backups)!

When I try to make SQL mantainance plans to backup my database automatically every 6 hours on SQL 2005 I get this:

http://img174.imageshack.us/img174/6838/mssqlbckptv2.jpg

How can I fix it? Help is greatly appriciated!

Regards

This behavior occurs when you install SQL Server 2005 without installing the SQL Server 2005 Integration Services (SSIS) service

Check out this support article I think it will answer your question.

http://support.microsoft.com/?kbid=909036