WiFi not connecting

Hello all, I'm new to the forem and this is my first post. I have a Inspiron 1505 I purchased new iin 12/06. Recently my Wifi just stopped working. I use the laptop both at home and at work and never had any trouble connecting, or connecting any where else I may pick up a signal. I've tried everything I can think of from reloading drivers to resetting my home wireless modem. Can anyone offer any suggestions? Thank you all in advance.