Hi Hugo,
Our server IP for DF1 is 71.94.87.43 and for DF2 it's 74.94.87.41. But do you know there is a
lobby fix available? So that you can now play the game without having to join by IP address? Yes you can post your Steam page address, is it
Delta Force Lives?. Also make sure you join the Facebook page for DF1:
http://bit.ly/groupdf
Thanks for linking to us!