I would expect so
What we need is a utility to stop the network services, change the registry, and restart the network, like nt's "net stop network" and then change the mac, then "net start network"...
hmm.. i'll have to look into that... perhaps there's an api call to "eject" a pcmcia card... or tell the system it's been ejected anyways...
like disable and enabling the connection.. sort of like what you can do in the network control panel in xp by right clicking on the connection and selecting "disable"
Pikoro