Game Lag under vista

I have a problem on Battle.net, I have some unintended disconnections after about 10 minutes since the beginning of the game, but I am not disconnected from battle.net nor Internet.

After looking around, I saw that it was probably because of the automatic wifi scan servers. So I disabled it via the command prompt, but always the same problem. I downloaded a program called Vista Anti Lag, but nothing convincing ... I'd like to know where the problem might come, knowing that I'm on Vista, with WiFi, as my key and my router is separated by a staircase and two walls, and it is really too long to travel to any I plugin Ethernet. Should I buy an extension cord to connect my usb key near the router?

I wish to state that all matters concerning my problem have all been abandoned ...

I will say playing games on wifi is not at all recommended.

Otherwise the issue may come when sending information to server and you have wifi too much loss for that leaves you connected

I will buy an Ethernet cable to bring my usb wifi to the router.

With this, its should go, and I hope. For against I do not know how to install Internet and Ethernet, and I lost the CD which came with my router... How do I do?

Just connect your PC with your router that's it, it is finished.

Here I plugged in the ethernet, but I have only 439 packets sent and received 0. What does this mean? And it makes me "Unidentified Network, Local only."

I said that I have my wifi at the same time, like that I keep an internet connection

Disable your wifi and stick with only Ethernet connection. Generally, when you are in Ethernet you should disable your wifi and vice versa