Have you considered taking the shots outside. It would eliminate most of the non natural lighting problems.
If you shot wide open (f3.5) and fairly close-up, the background would be out of focus anyway.
i was thinking of going outside - the only problem was even though the background will be out of focus i want it to fit in with the web page and not look too odd - like blurry green grass.
Suppose i might have to jsut try a few different things and see how it goes.