Hi, It's been a long time since I last set up a wireless network between 2 machines. I've followed the instructions here: http://www.dummies.com/how-to/content/how-to-create-a-wireless-ad-hoc-network-between-macs.html But I can't get it to work. In the Finder Preferences / Sidebar Settings, I've got all "Shared" options ticked. But I can't see the other laptop. What am I missing?