Cheers, particularly for the words of warning Nuke. I would've appreciated them more 24 hours ago though, before I went through all the troubleshooting.

Turns out XP is pretty good at establishing all its networking stuff (file, print, connection sharing) and stuff on its own - and yes, it's all firewalled up.
Don't envy me
yet, Hippo.

Last time I tried to get broadband set up (a few years ago - the oldest HLPers will remember), I faced enough problems to have me tearing out my hair for a year and a day. That's why I'm still on dialup! But hopefully all will go to plan this time - monthly plans have gotten pretty cheap these days, too.
FS, Age of Empires, SS2... *adds them to the list* I'd better get some friends over.
