i can map the c$ bat i have not the password of any user ??All my network is a workgroup.
Euhmm ...Right ... You can map c$ ...And have no password of any user ... Why should you need to change the admin password then ...Seems you have no bussiness doing that ... If you would administer this network then you should be able to change any password of any user ...Or am I mistaking here ?? ...

Also ... This is a workgroup ?? What is ... Is it a SAP workgroup or a Windows Workgroup ...

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.C.