Sincing MacBook Pro with TV

Recently bought a Flat Screen HD LED Smart TV.  Want to sinc MacBook Pro to it for presentation purposes.  Have a HDMI cable connected and worked with costco tv service for an hour to try and sinc and get the resolution to match up.  Any ideas out there would be great!

Welcome to Apple Support Communities
You have to get a Mini DisplayPort to DVI adapter and a DVI cable > http://store.apple.com/us/product/MB570Z/B/mini-displayport-to-dvi-adaptor?fnode =51 Unfortunately, you can't use the Mini DisplayPort to HDMI adapter to connect to a TV with DVI

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