Wow, thanks!
The system restore worked, I have my network and internet connection back.
Strange how a software fault can appear to be exactly like a hardware fault.
I'd guess there was some interaction between the McAffee fire wall and Securemote. After the restore, McAffee gave me a message saying it was reconfiguring the Winsock filter, whatever that means.
My faith in Microsoft software is restored (surely some mistake here...?). Perhaps it's time I bought a decent book about Win XP.
FWIW, I have a one box four port router-modem made by Netgear. I'm very pleased with it, you can plug in any computer to it and the computer can access the internet over my DSL connection. Of course you have to configure the router/modem to connect over DSL, but you should only need to do that once.
Thanks again!
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