I am trying to find a fast way to improve the look and feel

I am trying to find a fast way to improve the look and feel of my registration process for new users.

I don't need something specific, just want this http://xcarent.com/wp-signup.php to look better,

I need a way to customize this page, don't have big knowledge on coding, so is there a way to put this registration page on a fancybox modal or maybe not, maybe just, the way to organize it better to the right and put in the left the facebook plugin connector, just need a nice signup page, and this is making me crazy, i've been trying to do this for 2 weeks now. Somebody help please.