This is a USB ADSL modem.
... OK, sagem claim linux support on their web page. However, when I try to find the driver download page I get "Template file /bandeau_philips.html not found" instead.
So I am gonna have to ask you where you got the driver(s) and what form they came in (rpm, tar.gz what?)
If it is .tar.gz, unpack it and look for a file called "README". There may also be one called "install.txt" or similar. There are normally instructions in there.