From the Control Panel select Performance and Maintenance and then click on Power Options. On the next window you ca adjust the power settings, including how long after you stop using it you want it to enter standby and/or hibernation.
Hope this helps,
i leave my computer on over night, and when i come back to it in the morning- it is usually on standy. because i am using a adsl router, this means that my internet connection has also turned off
i would liek to know how i can turn this feature off -so my comptuer does not go on standby - or even better, go to the control panel, where i can control this settings?