Following on from Useful Module: GMap and Location I created this video in response to some issues people were experiencing with integrating with Views. These issues are documented here: http://drupal.org/node/371335 . Hope this is useful. Leave a comment with some feedback if you like!
With drupal 6 you can use the theme_submit() function to change the value of submit buttons, including those on the node forms without issue. The same cannot be said for theme_submit() in drupal 5.
