We are having difficulty waking a Dell Vista 64 computer over the internet. Normally if we tell the computer to go to sleep manually we can wake it, but if no one is logged in and it times out and goes to sleep, we can NOT seem to wake it over the web via wakeOnLan.me or RemoteWakeUp.com. We tried many settings in Vista, Bios, and our router. So what is different when you tell Vista to put the computer to sleep from the Start menu or the log in page, versus when it hits the non-use time limit and goes to sleep?

Is there a BIOS or Power Saving (or router) setting that definitely needs to be set, no matter what, to get the computer to wake on lan under all circumstances? It seems under many settings, sometimes it works, sometimes it doesn't even though we think we have all the settings the same.

Under power options we have sleep after xx minutes set
hibernate never
In BIOS we tried S1 and S3
remote wake on
low power mode off (needs 3rd party non mother board NIC to work with WOL)

on router we have tried Virtual Server and port forwarding UDP ports 7 and 9 to the IP address of the computer

The computer has a static IP address.