The Season X CoD4 national qualifiers are due to commence over the course of the next few days, seeing twenty six countries being invited to participate. The top four contenders from the previous season, Western Wolves, Anexis eSports, Antwerp Aces and soo delicious will also receive automatic invitations to the group stages.
Alongside the national qualifiers a European edition will also be run in parallel, giving teams that are not part of an eligible nation the chance to gain entry to the competition. Teams are only able to take part if they were not eligible for any of the national qualifiers (no more that 60% of players can play at one time from a single country that had a national qualifier).
You can find a list of the qualifiers and how to join them by clicking here.
Best place to ask, they know they have to do one!