Its not a dumb question its a very good one. If your wireless connection is not secured its wide open for anyone to use and yes they could get into your computer as well. Have a look under Network connections under control panel and see if it tells you it is secured.
Or right click the wireless icon in the task bar and view the wireless connections in range.It will tell you there if yours is secured. If it isnt go to your router homepage,click the security tab and set up wpa encryption
When I go to my Router homepage came across this 'When MAC Authorization is enabled, all wireless clients are blocked until their MAC addresses are added to the Authorized list. I HAVE Wireless MAC Authorization enabled so I'm assuming this will block anyone coming in unless I give them the MAC key. If this is the case I'm all set??
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