Up until a couple days ago, I could get online with my Intel-based iMac through my Linksys WRT54G wireless router. Then after copying about 11 GB of files from a laptop PC to the iMac, I shut down for the night, only to find that the next day I couldn't get online with the iMac, nor could the PC access the iMac's files. I have no idea what's changed and I've tried reconfiguring the router and gone through the network diagnostics on the iMac. It can't seem to get a 192.168.1.* address from the router, but rather gets a self-assigned 169.254.* address even though it's using DHCP. Any thoughts on this? I realize this isn't much to go on, but I'm hoping it's enough to work with to come up with a solution and I'll gladly provide more information to any questions asked. Thanks.