I have an iBook that I used to connect to my wireless network at home- Linksys router. I use WEP (?) and need to turn in my laptop to my school as I am changing jobs to a new school. How do I remove the password that is saved on the iBook so it can no longer use my wireless network? I already tried removing my Linksys router from the preferred networks list in system preferences...network...Airport. I even tried editing the Linksys preferred network by deleting the password it showed in the above location (in bold) and it didn't work. How do I do this?