It would help to know the computer and the OS and the makeup of your wireless network

Have you tried turning of the wireless security as a test or turning off the firewall on the computer.

Do you have other computers that connect wirelessly to this router?

How did you set it up?

The computer is a dimension desktop 2350 and the OS is Windows XP...Not quite sure how to turn off wireless security, but the firewall is off.

It could be a security issue between the router and the adapter. Do you know what type of router you have?

The router is a Netgear Wireless-N router WNR2000

Yes, there are 4 other computers connected to the network...set up was pretty much plug and play..cable company ethernet wire to the router.

Are these wireless or wired connetions.

When you installed the adapter in the 2350 did you load the driver/install disk for it?

yes..I ran the install disc

I have a netgear network that I just replaced with u-versre.Couple of questions. Can you see the netgear computer on the taskbar? Looks like a little laptop. That is the wireless manager. If you can see it that will be a start