I have a rather large wordpress database. I have recently changed the theme to a newer theme, which uses the new wordpress 3.0 thumbnails for photos. The problem is, i have thousands of posts that display thumbnail using custom field key, so all of those posts have broken thumbnails. I need to make it so that all of my older posts are updated to use the new wordpress 3.0 thumbnail. I also have a crontab job that auto inserts posts into the database, it needs to be updated to use the wordpress 3.0 thumbnails and not to keep using the older custom field keys for the images. This is really simple, could take 1-2 hours at max, I just do not have the time to do this.