6165i and NOKIA PC SUITE?
I think the Outlook sync function with PC Suite and this phone works. But I don't use it.
All of the dialup networking functions in PC
Suite are not supported by this phone. I think only GSM phones work.
I used the music ripper in the PC Suite to convert an MP3 snippet into a ringtone in the appropriate format. But I still couldn't sync that into the phone. It detected the phone properly and said "unsupported" next to it.
I just did an OBEX copy of the converted file from my PC to send the .aac file to the 6165i. It worked. And that's my active ring-tone now.
'Hope this helps.