Keywords Extraction

Hi, I have a list of keywords for a each images in a image library I am building like so: apple,pie,yum,pastry How do I go through this string and extract each word between the commas and put it into array? Help much appreciated, Matt Stone _______________________________ This email may contain confidential and/or privileged information for the sole use of the intended recipient. Any review or distribution by others is strictly prohibited. If you have received this email in error, please contact the sender and delete all copies. Opinions, conclusions or other information expressed or contained in this email are not given or endorsed by the sender unless otherwise affirmed independently by the sender. _________________________________