I have a laptop that is a DHCP client for my modem connections as well as my LAN connections. When I'm in the office and I boot up, I get an IP address from our company DHCP server. When I go into hibernate mode, go home and dial into my ISP, I get a different IP address that allows me to surf the net. I put it back into hibernation mode and go back to the office and connect to the LAN once again. But this time, I don't get an IP address from DHCP. Instead, I get an automatic IP address from I don't know where. I try to release it and it won't let me. I try to renew it, and it won't let me. The only way I can get a LAN IP address again is to reboot. Microsoft touts the ability of never having to reboot even when moving from network to network. I haven't found that to be true at all. Any ideas on how I can get an IP address from the DHCP server without having to reboot?