First, turn off the caps lock Typing in all caps is like shouting and our hearing is just fine, thank you.
Second, you did not provide enough details for us to diagnose the problem.
So, do you have an Internet connection or not? Do you have a DSL Internet Service Provider? If you do not, the man was right and your DSL modem won't do you any good.
IF you DO have an Internet Service Provider which provides DSL service, you need to call them to get the configuration settings for the DSL modem. If they provided that modem to you, they'll suport it. If they did not provide the DSL modem (you bought it yourself), they MIGHT be able to help you. Some ISPs will help. Others will not. And, they may just give you the details you need but not tell you how to configure that specific device.