Is it possible to run a local webserver on the n800?

Yes. There are a couple available, Apache (I think it is listed as HTTPD) and one other that I can't remember the name of.

There is thttpd but last time I checked, I haven't found a direct link. Thttpd is very light. It provides minimal SSI (server side include that launches cgi server side program and include the result in html). No php by default. Tight security also.
Apache is a bit too much maybe for a tablet..

I guess you can also find a webserver coded in Python or perl, google for this.

http://fragments.turtlemeat.com/pythonwebserver.php

this looks interesting, but i dont really have the time to mess with it.

Nginx runs fine on the N800. Very small footprint too.

R.
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I have PHP5-fastcgi installed and HTTPD in Os2008. Everything installed fine. I am think HTTPD is running because when I go to http://localhost/ I get a message saying it works. My problem is that when I put a .php file into the htdocs folder at /user/htdocs and go to the file in my web browser (ie http://localhost/helloworld.php) it is not rendering the PHP...it just shows the PHP code (ie <?php echo 'hello world!'; ?> .

I tried to make some changes to the httpd.conf file but how do I edit it? I can see the file in the terminal /etc/conf/http.conf but I don't know how to launch the file in a text editor to edit it. Any ideas?