I am not familiar with that particular router. Do you have the ability to log into it and change parameters? Is it a combined unit with the Cable Modem and Router into a single box?
If possible, it might be worth considering a more mainstream router, especially if you cannot access the configuration of your current unit.
You might also benefit from a newer router, depending on the age of it. Especially if you need better wireless range/speed.
Units from Linksys or Netgear are a good place to start.