... and this really isn't enough to be useful, but IIRC they changed from clear passwords to encrypted passwords between 98 and XP, and you can make one (IIRC) registry edit or a change on the Samba end, depending on whether you need to support pre-XP and XP-or-later on the same file sever.
Not enough to hand you an answer, alas, but maybe it'll speed up the Googling ...
It's been a while...
Not enough to hand you an answer, alas, but maybe it'll speed up the Googling ...