There are no such things as "stupid" questions. However if you think your question is a bit stupid, then this is the right place for you to post it. Please stick to easy to-the-point questions that you feel people can answer fast. For long and complicated questions prefer the other forums within the support section. Before you post please read how to get help
If you can get to the internet by other than wireless, check for availablity of the proprietary driver "fwcutter". If it is offered in the "Hardware Drivers" list, try installing it. It often works well with Broadcom wireless cards.