
Originally Posted by
kuroi
The official answer is that if you have two types of product, you should set up two product types and format each according to their needs.
However, if you're like 99% of Zen Cart store admins, you'll have tipped them all into product_general, and to be fair, documentation on setting up new product types is sparse and a bit techie.
So here's a second suggestion. Have you tried setting the product weights to zero on those products for which have no weight? If you do, the check for this should kick in and the weight data will be suppressed from the product info field.