Thanks a lot Kyle ! Ironically, I now recall having to do this a long time ago, with the phone I used as a companion to the 770 (a Nokia 6021). It worked out of the box with the tablet but I could not dial up through it from Windows. After a lot of googling I stumbled upon a magic incantation like this one, on an obscure forum like this one...

As I didn't have the same problem afterwards with subsequent phones and/or Windows versions, I of course proceeded to forget the entire episode thoroughly :-)

Thanks for reminding me, I'll give it a try !

Edit: of course, it works great. No more PC Suite silliness. Double thanks !