Problem: Each time we restart the computer or returning from Standby/Hibernate, we need to manually set “Use windows to configure my wireless network settings”.

Cause: Usually, either WZC controls or the installed software for the wireless card/adaptor controls. When the wireless card software controls, then the WZC control is disabled.

Solution:
1. Start - Run - services.msc
2. Check and start the following services

Wireless Zero Configuration
Wired AutoConfig (For XP SP3)

3. Start - Run - msconfig
4. Under Startup tab, uncheck any 3rd party wireless control application.
5. Under Service tab, uncheck any 3rd party wireless control service.

Same problems on internet:
forums.techguy.org/networking/660076-use-windows-configure-my-wireless.html
www.velocityreviews.com/forums/t376022-inconsistent-use-windows-to-configure-my-wireless-network-setting.html