This small extension overwrites the administration product detail template making sure that "Requires shipping" option "No" is always checked.

Best when combined with this extension: http://www.opencart.com/index.php?route=extension/extension/info&extension_id=10366 - Product - No Stock Subtract.

To install make sure you have vQmod installed and running, then unzip, upload and you are done.

Applicable for and tested in all OC versions through 1.5.0 - 1.5.5.1.