Works on my poweredges - it is in the power part of the BIOS settings on those.

Is this a plugin network card or onboard?
(IIRC some cards have a WOL header that needs connecting to a WOL header on the motherboard...)

Another thing: IIRC, WOL packets are broadcast - can you start the server, run ethereal and send the WOL packet to make sure it actually gets there - I have seen switches that don't pass certain broadcast packets (well, these were DHCP) unless specifically configured.

Also, what user are you sending the packet as? Sometimes you need to be root. (Though I think wakeonlan is a perl script that does UDP and works as any user...)