Hello! I know what to do:
Thumbnail plugin is not necessary since the new version of WP already supports it. To add custom field, read this:
http://www.osdesigner.net/downloads/custom-field-guidelines.zip
We don’t need anymore ShiftThis plugin. Now Wp v2.5 and + version have built in function to resize images.
http://www.osdesigner.net/forums/wordpress-themes-f4/problem-with-thumbnail-css-gallery-t59.html
