I've been using this bracket for all my projectors so far, and a friend of mine is using it for his HD72i:
http://cpc.farnell.com/jsp/endecaSea...=ST00081&N=411
It has alimitation of only two planes of adjustment, and I found that the best way to use it for left/right rotation and to get the pj aligned with the screen. If you need to have the pj point up or down to be level, I used some shims under the back (or front) of the ceiling part of the bracket. It has a quick release wingnut bolt so the pj can be quickly and easily removed if necessary.
Here are some pics of my HT1000 and then H78 using it:
http://uk.geocities.com/g.lightfoot@...m/ht1000.html?
There was a thread some time ago where it was shown that you can use a part from the other bracket (there are two in the box) which will allow adjustment in all planes, so you won't need to shim it like I have:
Another cheap DIY Projector ceiling mount
This is the image supplied by another member showing the mod:
Gary