You could try an autoresponder - try asking your email/hosting provider if they support them.
In a world without walls and fences - who needs Windows and Gates?! - Unknown Author
"And there's Bill Gates, the...most...famous...man in the...ah...Microsoft." -- A TV commentator for the 2000 Olympics.
Regardless if you're going to quote the user's name or not, you're still going to need to use a scripting language such as PHP or ASP. You have to instantiate an email object (of your choice), provide the necessary parameters (To address, From address, message, etc.), then use the object's "Send" function. Now the question you must ask yourself is this... Does my server support any server side scripting? If so, which ones?
Edit: Of course, you could also look into davesw's suggestion!
Curses to IE and their domination in the browser world, now you've pissed me off!