How can you set up away messages on the Samsung a670?

Hey all. I'm new here and am glad to have found this site...

I've looked through all relevant sections in the manual...I've searched through the phone and I can not find how to set up away messages--messages that play when you don't answer a call...

Another annoying part (this is venting) is when I listen to the default message....it is the sound of some guy getting punched in a noisy setting...what is wrong with Samsung to have made a default away message like that?

I'd be very grateful for someone to finally tell me how to make away messages...