Ah, all understood, RB - was just thinking of situation if he was on dial-up, had a medical problem, and no-one can ring to know whether he is OK or 'just online'. As for a new one with XP, feel sure a Novatech machine at under 175 would provide the basics (1 GB RAM, 160 GB HD) and then all it would need is a copy of XP, though I guess you may not use peer-to-peer.
Was just thinking an 'always on' 'net link would be easier, and similarly, maybe an XP laptop he could put to 'sleep' instead of 'off' would mean he would be able to continue from wherever he left off, if looking at some news item or working on a letter, etc.