WampServer

I am very new to all this...so I'm sure that the solution to my problem may be simple (at least I hope so)

I have just downloaded Exponent and Wamp as well in order to test locally. But when I launch Wamp and click the exponent folder I get this message.

"None of the installed Exponent Database Backends will work with this server's version of PHP."

Can anyone tell me what I am suppose to do. Please and thankyou.

make sure to get ga package, not editor package, since I've just downloaded and installed it w/o any problem; also remember to create db account for it before installing

Have fun,

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Thanks I believe that I downloaded the package. So when I go to phpadmin (I take it that is were I am suppose to create the db) I get this message.

Cannot load mysqli extension. Please check your PHP configuration. - Documentation

I am starting to think that maybe I am in over my head.