Pity you didn't go to YAPC::NA 2006, as there were a few good talks about ajax with respect to perl integration. For example, these slides might contain enough of a tutorial for you, especially given that it gears toward doing it in perl. Here's another one, with a slightly different topic. And if you're interested in any of the other talks for which slides have been put online, they're right here.

HTH

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qq-$_-;s,.*,ahc,;$,.=chop for split q,,,reverse;print for($,,$;,$*,$/)
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