The actual images (the jpg, gif or png files) are best uploaded in bulk via your FTP program. Several hundred can be transferred to your server in a matter of minutes, depending of course on the file size.
Easypopulate does not "upload images"... it writes information to the database.
So, you will use easypopulate to create the required references that "couple" your images to their respective products.
Easypopulate therefore, needs to know what image relates to what product code (model number).
So, after you have uploaded all your jpg/gif/png files to the images folder via FTP, you will use easypopulate to establish (in the database), the cross-reference that zencart needs to link an image (or several images) to a particular product via its product code (model number).
You will need - at the very least - to have appropriate data listed in TWO of easypopulate's columns:-
v_products_model
and
v_products_image
I ALWAYS name my images the same as the product code (model number),
So... if I have a list of product codes...
a000100
a000200
a000300 (etc)
my jpegs are named...
a000100.jpg
a000200.jpg
a000300.jpg (etc)
My easypopulate columns will look like this...
v_products_model >>>>> v_products_image
a000100 >>>>>>>>>>>> a000100.jpg
a000200 >>>>>>>>>>>> a000200.jpg
a000300 >>>>>>>>>>>> a000300.jpg
Naturally, you may choose to name your images any way you please, but the key is the relationship that is established between the v_products_model and the v_products_image.