I recently purchased an iBook and everything works great except wifi ... It can run at the local library but not at home (the mac is set up for WEP and cannot use the WPA that the modem runs with) How do I set up the modem to WEP so I can use the wifi as it is kept in the basement and will the other laptops work with WEP? The unit in question is a Gigaset SE 567 from Telus.