Hi again.
Questions just popup and this forum is great for answers

I need to know how this works.
Here in portugal we have our personal tax id number and companies have theirs.
Pernoal numbers start with a 2 and companies with a 5.
Now let's see this:
I'm in portugal(could be uk or us) have a french store (cest la vie.com, or whatever).
I also have a french dropshipper to supply my french clients.
How do you guys do it? Do i have to register a company in order to send the invoice to my clients?
Can i do it with my personal tax number?
How do this works?
thanks