For some reason (most likely thanks to zone alarm) my LAN connection's DHCP server has decided to change its Lease Expiry time from 3 days down to 1 hour! If anyone knows how to change/reverse it, it would be greatly appreciated.
Not sure if this will work for you...but worth a shot at least. http://www.microsoft.com/technet/prodtechnol/windows2000serv/reskit/cnet/cncb_dhc_ukjq.mspx?mfr=true