Backup Sql-server 2005

hi-i want to create automatic Backup scheduler for my sql-server 2005 how can i create sql-server2005 backup scheduler

thanks

http://www.sql-server-performance.com/articles/dba/creating_backup_jobs_p1.aspx

|||thanksthere information about back-up is i have to download a service-pack 1 of sql-server 2005,but when i install in my comuter there is give me error is not apllicable is win32 application,but my os is Xp,i have also instal a sql-server 2005 why not install a sp-1 in my computersql