I have a dell dimension xps t500 and it had a dlink dwl g520 network card installed. everything is installed and in the system tray it shows local network cable unplugged and the card is working fine but it still shows that and the connection goes online then offline and it runs very slow. I adjusted the antenna and all that. what should i do?

Hi! Well if I am correct, I have recently had experience with this particular model. It's a PIII 500 Mhz right? First of all, that little computer with the red X may be indicating a standard wired network card installed and the cable is unplugged? As for your new wireless network card, the first reason whey it is slow and goes on and offline is usually because the signal is weak. Where did you locate your router? Usually the signal strength of these units is surprisingly low! Wireless connections are notoriously unreliable. On the unit I was referring to I installed a wireless card and noticed that it simply cuts off after an hour or so and then computer has to be rebooted for the wireless connection to be restored. Additionally I have tested a variety of wireless network adapters with dissapointing results. Very inconsistent connections and they seem to just lose the connections after a while. I suspect it's due to some kind of overheating... Try placing the computer close to the router and see if it is still problematic.

Oh, I almost forgot--additionally please click on the icon for the card (usually colored green/red/yellow on the system tray) and this will let you select what you are connecting to. These cards are dumb and will connect randomly to any available network. If you are in a building or area where there are a lot of wireless signals, the card may not be connecting to YOUR router but to someone else's!!! That is very risky and you could pick up worms that way. Be sure it is your card you are connecting to, and better yet, add WEP encryption to your router and set your card to only connect to protected networks in the card utility.

the system tray icon for the card is white and i tryed all your ideas and it still doesn't work.

Sounds like the card is defective. If you are close to your router and are connecting to it and the connection dissapears after a while then the card is bad. It's overheating and is defective. Get a another brand like Linksys. I have a USB D-Link and it does the same thing after a while-just disconnects. They sold a lot of those free after rebate. I wonder why.

when i put it next to another card it works fine but when i move it back to the room it stops working