is it a crossed or a straight cable
I use a straight through cable to connect my wireless router to my 8 port hub. On mine port 8 is an automatic uplink port. In other words if the cable need to be a crossed cable the unit itself does the crossing on this port.
Depending on how old your hub is you might have to select uplink by depressing a switch. Your hub should tell you near one of the ports which one can be used for uplink. If there is no indication then it might not be possible. In which case refer to the hubs manual or check the internet for information on your hub to see if it is possible.