I'd like to be able to use Webform, but it doesn't offer an "autocomplete field" without customization. There isn't much information with Drupal.org about the best way to do this.

Any suggestions on how to add an autocomplete field a Webform?

Is this an option?

  Converting Texfield into autocomplete using Drupal's Form API

  http://qandeelaslam.com/blogs/cck/converting-texfield-autocomplete-using-drupals-form-api

Or create a simple module?

  HOWTO: Create Autocomplete on your CCK field or other field on Drupal

  http://drupalranch.com/Tutorial/How-To-Create-Autocomplete-on-your-CCK-field-or-other-field-on-Drupal