modem->DSL

hello,

for one of my future project,
the DC has to comunicate with a serverprogramm

i have a BBA so this will be the easiest way,
but i think most people has got a modem
and more and more have a DSL connection.

so what is the fastest way to go with DC modem into internat over an DSL account?


next thing is the modem programming.

1. modem init
2. set mode
is i the modem now conected?

modem_read_data for read incoming data
modem_write_data for sending data

if the modem si connected to a pc everthing is clear
if its connected analog to the internet
how can i tell the modem what IP adress the package should go?