I have a PEG-T665C and a PEG-TG50. I only have the install CD of the
PEG-TG50. I intend to use one PC (my Dell Latitude D600 laptop running
Win/XP Professional Edition) to Hotsync with these two PDAs with two
different User names.  The PEG-TG50 can Hotsync via both Infrared and
USB. But the PEG-T665C can only Hotsync via Infrared.   I installed
the USB driver obtained from the Sony support center, which got me to
the point that the PC can recognize the Sony Palmtop device alright.
But after a few seconds, the error 'The connection between your
handheld computer and the desktop could not be established. ...' is
displayed on the T665C.  Nothing happened on the desktop.

I would like to be able to manage both PDAs using the same TG50
software. Please advise how I can do that.  By the way, I still have
the T665C software installed in another laptop computer that I will
soon need to discontinue. While I don't have the T665C installation CD
any more, I may be able to copy things from that laptop if specific
name/location of the files is provided.