>>On some specific structure of some WIN32API functions, there is a mention to SID.
>>
>>Like in the SECURITY_DESCRIPTOR, related to the Owner an Primary group which contains SID.
>>
>>What does that mean?
>I know that SID is used by NT to uniquely identify local station by username and and password and is stored in system database.
>Don't know if it is of any help.

That might well be the case since those funtions are dealing with network stuff.

Thanks.