Hello, I have 2

Hello, I have 2 problems with my lenovo laptop z61m, that is running IE8. But first please know that my wireless internet connection is very low and I may be booted offline. In which case please email any answers to leadtraffic@yahoo.com. 1. I am on the beach on vacation and I am having a low internet connection, therefore I went to the office center that our rv park provides to get better reception, however, the wireless internet is still very low, so I thought I would plug directly into a cat 5 cable. However my computer is not recognizing the cat 5 cable connection. I have tested the cat 5 connection on my daughter's computer and it works fine. Why isnt my computer recognizing a cat 5 connection? 2. I recently had a fan error occur on my computer and I had a tech fix the problem. However ever since I have had my laptop fixed... now when I type in a url in my internet exporer browser I am forced to type in www. in front of the address, where as before I could just type in for example... google.com now i have to type in www.google.com . This is annoying. How can I get it back to normal?