How to import categories from another component

-- HikaShop version -- : 2.2.3
-- Joomla version -- : 3.2.1

I try to import a list of categories from DJ-Catalog2 to hikashop.
I have a CVS file with all the categories and import it to the SQL directly because I didn't find a category import (just product).
I understand that my "top" categories shoud have the 'category_parent_id' = 2 (product)
the 'category_type' = 'product'

I don't know how to initialize the value of:
- category_left
- category_right
- category_depth
- category_namekey (I put a unique name, BUT saw that it is a 'random' one!?)
- category_created, category_modified - Is this a timestamp?

any help will be appreciated.
I can think about two solutions:
1. Corect the CSV file
2. Have a PHP script to do it

Thanks in advance.

Hi,
I think that hte best solution will probably be to
- Create some products and categories manually
- Export them through a CSV file
- Edit this CSV file so that you'll be able to add your products and categories in it
- Import your CSV file back

Yes, I did it... BUT it does not explain how the attributes I mentioned get the values...
It seems that I have to digg it from the code