OK this is a really quick and dirty guide, check out the documentation if you want more details
grab the latest apache slackpack from linuxpackages.net
http://www3.linuxpackages.net/packag...-i486-1rob.tgz
install it:
upgradepkg --install-new apache2-2.0.49-i486-1rob.tgz
start the server:
sh /etc/rc.d/rc.httpd start
thats it, fire up a browser and open
http://localhost, you should see apache introduction page, the default document root is /var/www/htdocs so this is where you put your files, and configuration file is /etc/apache2/httpd.conf
you can see the documentation in
http://localhost/manual