Help with Auto Responder

[Kathryn]

Hello, I'm really new to this forum and Internet marketing. I was trying to set up an auto responder for my site and don't know where to find this code
type="hidden" name="r" value="1">

<input type="hidden" name="a" value="sub">

<input type="hidden" name="ref" value="none">

Can someone help me?
Thanks
Kathryn