Hello:
I've been over the documentation thoroughly. I was hoping to find information regarding what columns are necessary, and what columns are not needed.
I've been at this for quite awhile. I've set up a store, edited the CSS file to adjust header size, replace logos, change colors, etc. I've been through the localization successfully, have set default currency, countries, zones, etc. I understand how to enter categories and products individually, but cannot get a modified products csv file to upload correctly.

Thanks for your prompt reply.