Thanks very much migget!
With your method, i succeeded in installing the separate modem driver file. I was not prompted for a COM port.
There are still problems, though: When I select "connect to the internet" via PC Suite, it says "connecting" and then "could not establish connection" (the messages are translations, I use a Japanese version). The troubleshooter of the help file says something about bluetooth, but this does not apply.
If I check the modem settings in the OneTOuchAccess for Internet panel, the "Nokia 6101_6102 Cable" shows up. I selected my provider (T-mobile Germany) in the next screen.
When checking the Device manager of Windows 2000, a Nokia modem shows up as above. In the "check" (?) tab (3rd tab), a logfile can be called up. This file shows as last entry: "Device could not be opened because of error 0000002".
In the Device manager, no "Wireless..." entry shows up.
What to do?