I will try and write this as clearly as I can, becuase to my mind, it seems really quite unreasonable. I have two Macbooks that can connect via DHCP automatically to my router and I can share wireless internet easy and just fine from the both. However, I have an iMac that cannot (for a mysterious reason) connect to the same router via DHCP automatically and I must type in all the values for IP and stuff manually. I cannot share Internet from this iMac despite the two macbooks being able to conenct to its network. Any ideas why? Thanks! ps iMac running 10.6. One of the laptops is even a powerpc running 10.5 and it still works.