Thanks, MattG. What I'm trying to do is set up a sheet layer on 8.5x11 with a viewport that is NTS but fills up the page. What I had been doing was setting the viewport scale to 1/8", which is often too small, or 1/4" which doesn't fit on the page. I saw the Custom... option, but ain't nobody got time to click in the OIP and enter scale settings until you find the right one!
And Matt P: good to know you're a Tiger! If you're ever on campus please let me know!