That box is one example. You might look for a complete kit. To make that adapter box work you will also need a standard 15 pin vga cable. To go from the laptop to the adapter. Then you will need a standard hdmi to go from the adapter to the tv.
If you have an old computer monitor around chances are that wire will work.
If you want sound to go through the HDMI to the tv you will also need a standard 3.5mm audio patch cable. (headphone style connector on both ends).
The VGA and audio cable are only like $5 each on that same web site. Maybe there is a complete kit that would make it easier out there.