Please see the post in my signature about what kinds of information to include in your question. We'd love to help but you need to provide a lot more detail.
Intel Core™ Duo 1.83GHz or faster processor
Mac OS X v10.6, or later
Safari 5.0 or later, Mozilla Firefox 17, Google Chrome, or Opera 11
512MB of RAM; 128MB of graphics memory Adobe Flash Player | Tech specs
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