wireless not working, cable is OK

I have recently bought a new laptop (Dell Vostro 1200). The wireless card installed is Intel(R) wireless WiFi Link 4965AGN and it came with Intel(R) Proset Wireless Manager. However, I uninstalled the software.

My laptop was working great wirelessly(in the office,at any wireless hotspots), until I went back to my own house. Each time I tried to connect to my home network, I got limited or no connectivity message. However, my laptop can connect to the internet using LAN cable.

I suspect its configuration problem.However, before this I can use wireless with my old laptop with exactly the same TCP/IP configuration. all the other laptops in the house are connected without any hassle.

thanks for any help.

Its just your configuration in the Dell, if you still have problems call dell 24 hour hot line, as your other units are working well.