Kyle Olive has written a guide on EEweb.com to setting up a simple webserver and FTP server on the Arch Linux ARM operating system. The guide goes through the basics of setting up an Apache web server in Arch linux ARM, for serving webpages on a local network as used in homes and small businesses. He also shows you how to setup a FTP service so a Raspberry Pi can also be used for sharing data between the other computers on the local network. He also has other guides for installing Arch Linux and Setting up a Raspberry Pi.
Follow this link the-raspberry-pi-part-iv-setting-up-a-simple-server for the full guide.