Hi, I have a D-link router and I have two computers connected to it. One of them is a desktop connected with a cable running Windows XP professional and the other is a Dell Inspiron 6400 laptop running Windows Vista Ultimate connected by a built in wireless card. Sometimes, I am on the internet wirelessly with the laptop and all of a sudden, the computer gets limited connectivity. The one connected with a wire still has a good connection. I have to reconnect every time this happens. Sometimes it happens every 4 or 5 hours but just now, it happend 5 times in 30 minutes. Please Help. Oh yeah I have WPA-2 security.