Patrice,
I've retired from the converting the infidels game; too many brick 
impressions on my forehead, but I've learned a good bit trying to deal with 
the very large "loot for profit" community -- oops, I mean hobbyists  and 
Civil War Buffs (does that mean they don't were no clothes?) -- here in 
Virginia so FWIWON, here's some pointers:

1. You do NOT want "readings". It's not that your target audience can't 
read; they just don't, at least unless there's also pictures, and you'd 
better rely on the pictures to carry the message.

2. First, show some pictures of especially orderly looking and neat 
excavations (in the east, contact any student of Joffre Coe, and a number of 
others, of course). You don't need to explain the details at this point -- 
the appearance will speak for itself. Then, you need to collect as many 
pictures of trashed sites as you can (there are plenty of available pictures 
of properly excavated sites). Check with the usual suspects, NPS, BLM -- ask 
Sherry Hutt where you can access evidence photos from ARPA prosecutions by 
U.S. Attorneys. Then superimpose plenty of circles and arrows that 
illustrate carnage.

3. Develop a very simple, logically sequenced argument, starting with the 
archaeologist vs. the looter, who they are, what their motives are (the 
human touch). Yes, this is going to alienate some informants that are only 
"semi-bad", but this is a religious war, and if you ain't with us, your 
ag'i'n' us. Include pictures of looters in handcuffs, and shots of their 
mega-bucks road hog SUVs that were confiscated by the FBI/USMarshalls when 
they got caught. This is the overture, so don't dwell on it.

4. THEN switch to content. Context is really tough, even though it becomes 
second nature to archaeologists. It sounds like BS to the average looter, or 
even the just interested citizen.  Enlist the aid of some very smart 
artists, preferably someone with LUCAS studios who's looking for a tax 
break. Heck, write George himself and offer him an opportunity to atone for 
his Indiana Jones sins and get a tax break at the same time. Graphic 
presentations, moving ones preferred, are worth ten times ten thousand 
words, particularly for the young folks we need to get before they turn to 
the dark side.

5. Include the "site as library" in graphic format; include some moving 
sequences of brown shirts burning books. Every page torn out and thrown in 
the fire can never be retrieved -- you already know the mantras.

6. Graphically illustrate the "law of superposition" and how that is 
violated by looters.

7. Refine this idea (graphically) with a brief discussion of soils, and how 
sites can be sealed by volcanics, colluvial processes, and urban fill, so 
the site may turn up where it doesn't look like there would be one.

8. You could try some graphics of landscape modelling, but this might be 
better for the second presentation.

9. Give a visual presentation of the "community" that wants to preserve 
sites -- not just the pointy-headed intellectuals with pith helmets and 
bull-whips, but the responsible amateur societies, schools, state museums 
and SHPOs and private institutions, including some private developers and 
emphasize the rewards of joining into this community, along the lines of 
what some environmental organizations have done so successfully. The 
pictures of amateur societies, and espcially Native Americans,  working with 
professionals in particular excavations, successful interpretive centers 
developed from citizen initiative, etc., are essential. Pictures of amateurs 
turning in site forms, NOT Riker mounts full of arryheads, to the state 
repository.

10. Finish up with handouts with websites, local contacts, state contacts. A 
page or two of this material, following up a multimedia presentation, will 
be worth a lot more than a five, ten or twenty page essay on the topic.

11. Media: A canned powerpoint generic presentation that can be provided 
free or at postage charge on a CD or DVD to (minimally vetted) requestors 
will go along way. Isn't it possible that a corporate sponsor could be found 
for production and materials costs? Maybe SAA could support it? The next 
leap is a big one, but how about contacting public network or independent 
producers for a half-hour production, to be made available FREE on DVD?

This is not intended as a criticism of your plain to gather together the 
text sources on this topic. Reach a little farther; it may not be as tough 
as you think.

Tim T.