[development] Adding a phone number field to the site wide contact form

Good morning, I am looking for the best way to add a phone number field to the standard site wide contact form in Drupal 6. I have looked at Webform which will work, yet I really don't need the submissions stored. I have also read the description of the Contact forms module, which appears that it may work, but also seems like a lot of overhead for the little feature I need. I'm curious if anyone can suggest a simple light weight method of adding a single additional field to the site wide contact form? Thanks, Everett Zufelt http://zufelt.ca Follow me on Twitter http://twitter.com/ezufelt View my LinkedIn Profile http://www.linkedin.com/in/ezufelt