Ok everyone. You guys have helped me before, so I am asking for that same great help again. I recently purchased a new Netgear router so I can get on wireless with my MacBook. My mother can get on with her 10.4 iBook G4. All of the other computers (PCs with ethernet) work. ...Sadly even my XP partition connects with no problems. On 10.5 Leopard I get an error "An error occured when trying to join...". I cannot even setup the connection manually. In frustration and weariness, I wiped my harddrive, thinking I can start fresh. When I reinstalled 10.4 (..as I have to for 10.5 to install) my wireless connected. I reinstalled 10.5 thinking the problem was solved...and it came back. Does anyone know what is going on??? I am so frustrated. Please...help.