Using MS Word 2003 and MS XP Professional

The following code does not seem to trap the "Path/File access" (error
75) - why would this be? What can I do to trap file open errors or
alternatively catch badly formed file names?

                   On Error GoTo badfile:
                   If FileThere(sourcefile) Then
                       Open sourcefile For Binary Access Read As #8
                   Else
                       GoTo badfile:
                   End If

Function FileThere(FileName As String) As Boolean
    FileThere = (Dir(FileName) > "")
End Function

The form of the file that it is trying to open is;

X:\B\Big BearAssn\Billings\1234567-Bear Fund $1500 Jun 06 (2).doc

Thanks for your help - this is driving me squirly