We need to somehow force Windows XP to drop its DHCP lease and request a
new one next time it boots up. We enabled dynamic DNS, but DNS entries
only get created when a new lease is obtained, not when an existing lease
is renewed. It seems that Windows workstations rarely or never get new
leases. They keep requesting the same IP address even if the lease is
expired, so the DHCP server must think it's the same lease because it
never creates the DNS entries. If we do an IPCONFIG /RELEASE and reboot,
it works every time, but Windows must not do a release before it shuts
down. Any ideas? I can't find any useful or relevant information on
Microsoft's site or via Google, but I'm sure *somebody* must have done
this before. A thousand thank you's in advance.

Tim Thacher