AppleScript for Issuing Command Line Command from Terminal

[J. Torrey]

Does anyone have an AppleScript they can share with me on how to 
execute a command line command in Terminal?  Specifically, I want to 
execute the following command on a regular basis and don't want to have 
to type it or copy/paste it every time I boot my machine:

route -n add 192.168.253.0 192.168.123.4 255.255.255.0

Thank you,
Jason