To be honest, it sounds to me if you are looking for information on using NPH (non-parsed header) scripts, using a content-type such as multipart/mixed or multipart/x-mixed-replace.
Perhaps these links may help:
Hope that helps some. I'd be interested to hear what you find, if you're willing to report back on it.
In reply to Re: update content without refreshing
by atcroft
in thread update content without refreshing
by kwtow
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