Your head must be very busy, FA - how can an a/d be to the SW of CDG and to the east of Paris? Let me offer some help: were you thinking of Chelles? Lognes? Le Plessis / Belleville?
And, sorry to sound harsh, but "G la N" must be confusing to just about anyone - after putting on TWO thinking caps I realised you could perhaps have meant "G du N" which can be understood as "Gare du Nord" which translates fairly well to "North Station"
[[ edit: ok, you found it without my help, bravo! ]]