Position so far.
Done the ping thing again, and the same response.
Happily downloaded iTunes & Quicktime updates (80mb) with no problem, during which the ping thing still still said “Ping request could not find host http:///www.bbc.co.uk. Please check the name and try again”.
Managed to get to this forum once and post the last 3 posts above, but as soon as I pressed “Send Post” that was it – it ceased to cooperate again.
Most of the time it’ll open the homepage (BBC) and go no further.
When the ADSL is hooked up to my work laptop (where I am now) there are no problems, so the router seems fine & the issue must be on the PC.
Anyone care to suggest what investigations I need to do next? It worked fine yesterday (and has done for months, well as fine as any Vista PC works), and I can’t recall doing / changing anything that could have provoked it.
Cheers.