Just to see that the modem is working at all, open IE or whatever browser you have and in the address box type http//192.168.1.1 and try to open it. You should at lease get a login box or an error of some sort. I'm not familiar with the Siemans modem but it just seems strange that there isn't an installation CD to walk you through the steps. Both my original Westell and my new Netgear came with installation CDs.