Don,
That's a tad confusing... You say your WiFi is not showing up but then you say you're connected to the WiFi router...
What does "ifconfig" give you? That should give you a list of all the network interfaces on your system. If you have a WiFi interface, it'll show up as wlanX (usually wlan0 if it's the only wireless interface). If you have a wlan0, then I'd say you have a driver issue and you'll have to figure out what wireless interface you have and find the appropriate drivers which should be fairly easy if you're running Ubuntu or Mint.
Regards,
Joel - W4JBB
Joel Black - W4JBB