Just to summarize what I did on this topic.
I bought a code from fscmap.com, I received the code one hour after I send the payment.
The code worked fine
I had an issue on the burned DVD i used (I burned them too quickly...)
After I burned again all DVD's at a low speed, the installation worked great using the 3 DVD's (about 1,5 to 2 hours).
Thanks to fscmap who respond quickly to the answers we can ask him.