Ya I just bought the pro kit for a 17" monitor. I was wondering how you do this keystoning. I would like to have it hang from the ceiling. Any help grately appreciated.

Most use the front fresnel and just adjust that. For now mine is just a hanging fresnel. so gravity keeps it plumb

Translation: Let the front fresnel hang from a pivoting piece so that the bottom will always point straight down. This should automatically keystone, though it won't account for side to side.

The two most widely used methods for keystone correction involve the "gravity" method, as described above, where you let the front fresnel hang (or pivot) from the top. The other common method is to allow for the front fresnel to pivot from the center (manual keystone) and is controlled by a knob of some kind from the outside of the box.

For more reading (probably more than you want), see this Keystoning, Information, calculation, correction thread.

For examples of the two I mentioned earlier, see post #71 of that same thread.

And here's a Google Search of the LL forum for even more reading: site:lumenlab.com gravity manual +keystone

Thanks for the input. Question? If I use the gravity theory on the fresnel, would i have to fuck with the triplet lense or would it all match up right?

Nothing has to be done to the triplet for keystoning. You want to keep in mind that you'll only be able to keystone the front fresnel about 15 degrees at best, though.

All right thanks for all the help