Adobe Creative suite CS.5.5 on MacBook Air 13

Hi there, 

I really need some help i don't know what to do. I have I want to install my Adobe Creative suite cs.5.5 on my macbook 13 that i purchased recently. I've downloaded the install folder but it says to contact the supplier.....Can someone help me please ? I work with these programs and i can't afford to buy a new version 

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