I have wireless internet, router access is my bedroom. Wireless cannot reach throughout house. We have tried everything and have been told it's bc of house design and too many windows. My office is on the other side of the house. The guy who built our home was very techy and had computers everywhere. As such, in the office there is a jack with 2 ports, one marked telephone the othe adsl. My question is, can I access this adsl line in tandem to have internet access in my office while not changing the other set up?