No, I believe that ALL OEM product keys are disabled for online
activation, whether the OEM is using bios locking or not.
The problem is that OEM PCs (e.g. ANY factory made PC .... Compaq, IBM,
Dell, HP, eMachines, Gateway ...... etc.) have these labels on them with
the product key, sometimes on the side, sometimes on the back. Well,
when machines are located in libraries, airports, kiosks, really
anywhere that they are "in public", people can "steal" the product key
with nothing more than a paper and pencil. So beginning just under a
year ago, Microsoft decided to disable online activation of all OEM
Windows XP product keys. You must do activation over the phone.
Regardless of whether the copy of Windows is bios locked or not (which
is an option for the OEM, some are, some are not).