Does your ethernet become disabled when you remove your laptop from power (Win XP),
windows does this to save power .
First put back power> got to that devices property >configure>Power Management> Deselect “Allow Computer to turn off this device to save power”
Then go to run>type cmd>powercfg /DEVICEQUERY ALL_DEVICES
(Actually wake_programmable is all u need)
see the name of the device
powercfg /DEVICEENABLEWAKE <name>
Thats ALL !!!!
(PS if you are using vista open cmd in administrator mode /UAC mode)