Thanks Shuttlebus
Yes, have re-installed XP TWICE - no change. The card is a Belkin so, as you say, it ought to do the business but we're talking MS Windows here, so no real surprises!! The registry has had several clean-outs with Reg Mechanic and I suspect that, eventually, I shall have to (yet again) take it back to bare bones and re-install everything. Must keep practising with Linux!