Check wether there is any problem with the router, reset the router and configure it again. if that dosent work, check the wireless connection on a different laptop if possible. if that works.  As u said  it only occurs on ur network. plz reply to me. 

It does work when we remove the security.  We have narrowed it down to having something to do with the security.

The laptop is connected wirelessly to the router, and all works fine when the security is turned off.

Yes, when I say "security" I mean Norton or McAfee (I can't remember which we have right now).

We have high speed cable internet access, and that runs through the router to the desktop, and that works fine.

There are any number of factors that could be causing this problem. Is the laptop connected to the router by ethernet cable or wirelessly? Do you have any third party software firewalls enabled on the laptop?(Norton Internet Security, McAfee Security Suite, Zone Alarm, Trend Micro, etc.) These need to be configured to allow internet access and network file sharing. I'm assuming that your experiencing no connection issues with the desktop, correct?

 

ther is something on ur router which is causing this problem as the connection is perfect when u use other network except ur own.

are u using WEP OR WPA ?

and wat is the modell no of the router ur using.?

 

Is the firewall software installed from the Dell factory? Or is it a retail version that you paid for separately?

router is NetGear WGR614 802.11g wireless router

laptop connects to the internet wirelessly though the router when desktop security is turned OFF

 

I am not sure about the WPA thing...will check about that tonight

Must be "retail" because we have had the desktop for several years, and my husband updates the security all the time.

Most paid security software subscriptions are good only for 1 year. Check to see if your subscription needs to be updated?