Kateline wrote:
... we have almost no Internet access upstairs - the router is located on our first level. Is there any suggestions to fixing this? ...
Take a look at this thread to learn how this user added another access point in another location in his home. It may work for you.
http://forums.verizon.com/t5/FiOS-Internet/How-to-add-second-access-point-using-coax/m-p/594929