Changing the default imagefield formatter for a node field I am trying to change the default formatter for an imagefield node form field so that it will default to the thumbnail image and not the icon. I have already tried a form alter and that isn't doing a damn bit of good. I have already flushed all the cache. So I was wondering if anyone else knew how to do this.

I am running Drupal 6 by the way. The field in question is using imagecache presets.
Go into the admin for the content type in question and look at the display fields, eg, admin/content/node-type/THISCONTENTTYPE/display and change up the field you want.  You can select any imagecache preset you have defined on your system along with a number of other options.