Windows 7 Service Details
Needed for internet if you use DHCP. Can be Disabled if you have a static IP address. If you do not have a static IP address, you use DHCP to obtain an IP address, so leave it on.
Registers and updates IP addresses and DNS records for this computer.
Consequences of Stopping:
If you use DHCP to obtain an IP address, network connectivity will be lost. If this service is stopped, this computer will not receive dynamic IP addresses and DNS updates. If this service is disabled any services that explicitly depend on it will fail to start.
All services listed in 'Required For' will be unable to function
WinHTTP Web Proxy Auto-Discovery Service