I would recommend getting a N
ard for your older computer (they are also called ethernet adapters). All you need is a free slot in your computer, and a little know-how. I am making an assumption that your computer can house a NIC, but pretty much all of them can. That in place, you can connect it directly to the router with an ethernet cable.
Here are some you could get:http://www.newegg.com/Store/SubCategory.as...Interface-Cards
Note that the common standard is 10/100mb
with one RJ45
Installation is pretty straight-forward - let us know if you decide to do it and if you need help.
So, the first step is, do you have a free slot in the back of your PC?