newbie : problems with ibase_connect .

Hi everyone ! I'm trying to establish a connection to a remote Interbase Database. I use the same login and password as i'm used to but it doesn't work :((( I obtain the following warning message : <InterBase: cannot attach to password database in c:\program...> and the connection fails... I use this code : <$dbh = ibase_connect('//server/D:/base.GDB', 'login' , 'password');> Can anyone help me ?? Maybe have I forgotten some settings... Thanks for your help !