I have a login script, and I want to make a Text submit rather then a submit button.

You could use CSS to style your submit button as a normal link.

However, this is a generally a bad idea. Normal links and submit buttons do different things, and users get confused when they can't predict how links, submit buttons, and other widgets will behave.

Well, how do I make a text login as if it was a submit button?

You could use CSS to style your submit button as a normal link.
http://htmlhelp.com/faq/html/docs.html#about-css