If you want to modify text files on the server here is a handy way to make changes in a text editor (TextWrangler) and when you save the changes they are automagically uploaded to the server.
This video tutorial will show you how to set up an FTP client (CyberDuck) and a text editor (TextWrangler) to edit files on your website remotely. You will find this useful for modifying Indexhibit or making other changes to your website.
Download and install CyberDuck and TextWrangler (both free from the links below) before starting this tutorial.
Get Cyberduck from- http://cyberduck.ch/
Get TextWrangler from- http://www.barebones.com/products/textwrangler/