Someone please help......wireless router

[Cream Soda]

Hello, I need some help from someone. I been trying to hook this wireless router up for awhile and I can't do it [img]/images/graemlins/frown.gif[/img] I tried following the directions and all I can hook up is my desktop to the router, how do I get the laptop hooked up? They gave me one ethernet cable with the router do I need another one or something? I would really appreciate some help from someone, thank you......BTW the wireless router is D-link and I have a Comcast modem