Wow, we are close. I had never noticed that. Kind of weird that we have almost the same number of posts too. Mapquest shows that it'd be less than a 1/2 hr drive for me to get to Zionsville. I live in Fishers on the NE side of Indy. That'd be cool to drop by sometime. You should do the same eventually when I have something worth seeing... or before then to help me build it

hehe.
Thanks for the rule of thumb. So, I am guessing my eyes to be about 45 inches from the floor. I read your rule to mean that 2/3 of my screen should be above 45 inches. So, (2/3)*45=30. So, that places to top of the screen about 45 + 30 = 75 inches off of the floor. So, the frame should begin around 13 inches off of the ceiling and the image should begin 15 inches off of the the ceiling.
OK, so if I buy the AE700 and mount it onto the boxed in I-Beam, that puts the lens about 13" (I-beam box) plus mount height (?) plus about 2" from the bottom of the unit to the center of the lens. So, that puts the center of the lens about 15"-20" down from the ceiling. So, it sounds like my lens will be right at the top of my image.
They say not to use extreme lens shift as it causes convergence issues on this projector. I believe this equates to a 50% lens shift. The max is 63%. I wonder if that's extreme. hrmmm...
Well, thanks for the info...