I'm trying to hook my Macbook Pro up to my HDTV through HDMI. Currently, I have an HDMI to HDMI cable, but I need a converter to get from my Macbook Pro to the HDMI cable. Does such a converter exist? Is there another way to do this? I've never tried this before, so I'd like to get something that I know will work before I start experimenting. Also, I bought my Macbook Pro in 2009 if that helps.