I have a MacBook Leopard that is linked wirelessly to a Dlink router. To this router are also linked 2 Windows laptops, 2 windows desktops and a Canon iP4500 printer. Sometimes my MacBook can see the other computers, sometimes it can't. The other computers cannot see my Public Folder or any other folders that I have shared. I cannot see the Printer at all. Does anyone have any suggestions? I have been looking all over the net for solutions but they seem to relate to an earlier version of Mac OS X - I am very new to Mac so this could also be the problem!