Select the place you want to download with the selection tool, select the lidar imaging option for that area (such as coastal NH), and select bare earth dem. Click the green button that says, "... Results Found". Enter you email, download the files from your email, and unzip them to view them in the FugroViewer. Good luck, I hope it works for you, I have been using the UNH lidar for a while now.
Anything for cheshire county