waiting for data from web users

I want to program web based medical decision support applications using some
basic techniques from the 80's... rule based reasoning, tmycin etc... I am
having trouble implementing the web interface where my program asks for
input and has to wait for web users to put in the input.

Is there an easy way using stream-listen
http://www.franz.com/support/documentation/6.2/doc/pages/operators/excl/stream-listen.htm

or do I have to use some trickery using elisp sentinels?
http://www.delorie.com/gnu/docs/elisp-manual-21/elisp_614.html

or launching sub-processes?

I am using cmucl because its the only one I could get to load portableaserve
after giving up on araneida.
Is a combination of the new cl-http and sbcl better, haven't tried that
yet...

my site is at ai.residentmanual.com
the tmycin part isn't working yet...
forward chaining and backward chaining work reasonably well.

Thanks,
Naveen

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