how to get to my house

my friends, here are indications to arrive at a place where you will be more than welcome after a long and exhausting travel.
If the airport is charles de gaulle (CDG) also called Roissy then you have to take the RER B (a train commuting from suburbs to paris) going south, make shure that is it going to paris.
If you fly to the other airport, called Orly, you will take the same train RER B, but going north, towards paris.
In both cases you'll have to get down at "chatelet les halles" then you take RER A towards "marne la vallée"
get down at the station called "Nation" then you have to take the subway line 9 (follow indications inside the corridors) towards "mairie de montreuil" and get down at the end of the line (station called mairie de montreuil)
When you get out of the subway, you need to find the avenue walwein (it is facing an austere building (the town hall) built with a touch of communist style, with a clock tower on top of it) the avenue goes alongside a square with a fountain, go up that street until the second crossroad.
Then turn right into "rue gallilée"
At the next crossroad, turn left into "rue de virty" and walk up the street until number 77, which is my house, see the picture above.
In case of emergency, call me from a phone booth when you are lost.
If you can't find the booth just give me a call !
my phone number is 06 68 02 24 12, home phone: 01 48 58 59 61
you will probably have to buy a card in a tobacco shop.
good luck...