wireless card DNS error

[daad]

Hello I use XP with a Dell laptop and access work servers through VPN. I am using a netgear Extreme G card. There are a couple of websites that I use for work that are behind company firewalls. When hardwired to my wireless router I can access these sites but with the wireless card I cannot. It is the same in hotels and other hotspot areas, I cannot get to these sites. What is different in the PC config as far as wireless card compared to ethernet card. I'm using all settings for TCP/IP the same for all connections. I am self taught in pc and network config. I am trying to understand how the machine config makes a difference between wireless to wired. Any help out there?

[z1p]

Welcome aboard daad...

Whether its wired or wireless shouldn't make a difference. Can you check the nameserver configuration for both wired and wireless? (open a cmd window and run ipconfig/all) Is the list of name servers the same for both configurations?

If that looks good, the next step is to see how the name gets resolved correctly and where it fails. Again on the command line, enter nslookup. You should get a '>' prompt. At that prompt enter 'set debug'. Then enter the name of the site you are having the problem with (without the http://, i.e. www.cybertechhelp.com). This should generate a bit of output. When it works you should be able to see what server actually returned the ip address resolution. When it fails you should see a request sent to each name server in turn and that each webserver could not find the name or timed out.

Check that the name server that returned the IP in the wired configuration is indeed getting queried in the wireless config.