Problems with wireless internet

So, I have a wireless Road Runner internet and I got some problems with it. The internet is good and fast but sometimes it disappears. I have a modem and a wirelles rounter. I'm running Vista on my PC and internet sometimes dissapears with no reason. It says that it is connected to my network (Deivis) but it writes "Local Only" where it should be "Local and Internet." The signal is good. Then after a while it appears again and works just fine. I was thinking maybe all the cords are not connected correctly 'cause I have one cord free but then I though if this will be true, there will be no internet. It's hard to explain, but basically sometimes a well-working internet just goes to "locals" and don't work...

Picture 1

Picture 2

Picture 3

I don't think it's RR... Something is bad on my side I think...but what?! :(

P.S. my internet was gone 10 min. ago