No problem..resolved
Private Sub wazopen_Click()
Dim myfol As String
Dim myfln As String
Dim myfpath As String
Dim PA As String
Dim AcrobatReader As String
AcrobatReader = "C:\Programme\Adobe\Reader 9.0\Reader\AcroRd32.exe "
myfol = "C:\Dokumente und Einstellungen\singava\Eigene Dateien\Eigene Bilder\T_online Rechnungen\"
myfln = Me.txtwaz
myfpath = myfol & myfln
PA = AcrobatReader & myfpath
Shell PA, vbNormalFocus
End Sub