Sure,
Since I have so many products, (over 26,000), I use MS Excel for my data base and convert the files to .CSV files and then upload these files to my php/SQL server. The files I up load are Manufacturers, Categories, Categories Description, Products, Product Descriptions and Products to Categories.
This gives full control of my products and makes mass uploads easier.
So here is an example of my error in excel, which I converted into .CSV and uploaded into the products.sql
Attachment 13809
Hope this clarifies things a bit.
Danny