Colin of All about N91 commented that the N80/Series 60 v3 SU-8W driver should work and it does, thanks! D'oh. It's very confusing to figure out which device runs which variant of Series 60. In my sleep deprived state, I mistakenly thought the N90 was also a Series 60 v3 device. Nokia, please update the SU-8W driver page (and also build this into the OS or pre-install it!).