Submit Button

I figured out that it is a default feature that if you are in an input box and hit the enter button it will cause the form to sort of 'submit'. I have a page where the form action is the actual page but it does all its variable assigning and such inside of an if then statement.
If Request.Form("submit")<> Then
and at the end of the if then I have a response.redirect to throw the results of my variables in the llink.
So what happens is when I hit the enter button it almost looks like the page is refreshing since the form action is the form itself. And the form doesnt even get into the If then statement. Anyone have any suggestions or direction as to what the easiest way I can do this is?