1. I use the Cnet Networking forum's suggested settings.
2. If that fails I try another wifi router.
As that has never failed me unless the client machines have troubles that is all I've ever needed.
Sorry but I can't find your router settings so I can't tell if you are using the suggested settings.
I just set up wireless in my house. I set it up on my Dell and it works fine. It also works on my iPhone.
Another Dell M1330 we use at home though, doesn't read the wireless connection at all. The computer can detect other wireless in the vicinity, but not this one.
I did set up Broadband originally on this M1330 (which i then converted to wireless) so dont know if that has been a reason for it
I have tried to manually add a wireless connection, but still to no avail.
If anyone has any ideas on how to solve, please let me know