had the same problem with nokia suite 6.4 as well,
basically im still using a usb 56k dialup modem
, when ive installled the app(with a 6630 via usb lead) , all my dial up accounts die, i cant access the internet, it dials, does the handshake as if it's connecting, then attempts to redial ?
This happens when the 6630 phone is not connected,
When after formating the drive (uninstalling 6.4 first, still no effect)
and reinstalling xp pro internet works ok, installed 6.5 assuming this bug may have been fixed, the same happens.
Also this time when modem is connected as well as the 6630 the connection trys to connect thought the mobile even though the settings are saying to use the 56k modem.
any one had the same problem, any ideas would be appresiated, as i'm becoming on first name terms with the staff at the local libary using the net there.