I have had the same problem: I have an older D-Link wireless router (DI-524), and my wireless worked (and works) great with my 5-year old Gateway laptop. I just bought a new Samsung netbook, but I can't consistently connect.

The signal strength is excellent and good, but I get the same error messages ("acquiring network address").

I have tried resetting the cable modem, the wireless router, setting the IP address manually, updating drivers, removing the network from the new laptop and reinstalling it, disconnecting the firewall.

Sometimes, it will work for a few minutes, but then it stops again. But my old laptop (which doesn't get as strong of a signal) can find the addresses fine.

Could this be caused by an older router? If not, any other suggestions?

Thanks.