wireless problems

I am trying to set up a wireless router for my laptop. I am using SBC’s dsl connection that lets me have a phone line at the same time. So I use an Ethernet cable between the device SBC gave to me and my D-Link wireless router.
My computer tells me that it senses this wireless network. When I set up the network through the wizard, one step requires me to plug in a flash drive into the wireless access point. But only my computer has a USB port. I cannot find any USB port on the wireless router. The wizard tells me that it has not successfully completed the process. My wireless network is not working. I am not sure if it is because I have not set up the process correctly through wizard.
Could anyone give me some ideas on what is going wrong? I would really appreciate your input.