Transferring into University of Illinois-UC

I am currently a first semester freshmen at Indiana University and am looking into transferring into the University of Illinois in Urbana for the spring semester. I was just wondering how that worked? Do they look at my high school grades since I will not have a finalized transcript for my first semester at Indiana? Also would my chances be higher if I applied for the spring semester or if I applied for the for the next school year? Does the school typically not admit that many people fort the spring semester?

Have you looked on the school web site?