Hi Sandeep,
Thanks for the Reply.
yes i have been to that link you sent and have tried solutions mentioned their, but no luck.
My Wireless LAN Adapter is Intel<R> Wifi Link 5100 AGN
The drivers for this should be latest as i have performed this:
Uninstalled the driver from DeviceManager, Restarted laptop. downloaded latest driver for vista-64 from dell website. and installed it.
I can connect to the router though Ethernet if this information helps in anyway.
Thanks Again.
Regards