Jacob zou

Hi, I am currently a senior student and applied for 2014 fall MS in CEE. Got admitted in CMU. I found the assistance of computer in designing and calculating are enormous. So, I want to transfer to the School of CS. Is there any chances I can change my major to CS when I get there, or after a semester taking CS's courses? Has anybody done that before? If there is, how to do it? Really could use some advice right now! Thank you guys!