From the home page of any of these superintendents' websites, you'll be able to get to the Judging Program.
On Onofrio's site, select the "Show Information" tab then "Closed Shows," then scroll down to find the show you plan to attend. Click on the highlighted name of the kennel club sponsoring the show, then scroll down a bit to see if the judging program is available.
On Foy Trent's site, mouseover the "Show Information" tab then select "Closed Shows"; scroll down to the show you're interested in, and if the judging program is available, there will be an active link to it.
On Roy Jones' site, scroll down the home page to "Judging Programs/Breakdowns" and you'll find out if the judging program for your show is available yet. (If not, you can check "Breakdowns" to see how many Newfs are entered, but it won't provide ring times.)