Auto login issue

I followed a tutorial that made os x start loading my desktop before I entered my password. I've put a link to the article below. I upgraded to Lion since then and I'm trying to get the script to stop. I've tried deleting the .plist I created but that hasn't changed anything.

http://lifehacker.com/5779922/make-os-x-load-your-desktop-before-you-log-in

Does anyone have any suggestions on how to get this back to normal? Thank you in advance.