Can anyone help me with this problem. I have a Dell Inspiron 2200 and it seems that the wireless card has somehow got switched off, it worked ok one day and the next day it didn't! I've tried contacting Dell but my warranty has just ended so they won't help me. I can connect to the internet if I plug in a cable between the wireless router and the laptop but it goes off when I unplug it. Tiscali have checked it out for me and the broadband connection to my house is good. What do I do?