the mistake was
that instead of using WinSCP3.com i used WinSCP3.exe !!!
Before posting, please read how to report bug or request support effectively.
Bug reports without an attached log file are usually useless.
but it still popups for a password !
maybe something in the sofwate as it installed or configured make me the problem>
thnaks i nadvance
C:\PROGRA~1\WinSCP3\WinSCP3.exe "open user:pass$$@100.10.10.11" "c:\WG.PRN /backup" "exit"