Help needed from Vb programmers urgently!!!!

Hi all,
I have a Vb form on which i have a Drive list box,File list box and a Dir list box control.

The problem is as follows:

1> When i select a local directory from the Dir List box, i am able to see all the files present in the directory in the File List box control.Also there is no problem when i move to any sub folders
on the local drive.

2>But When i select a drive on a network, i am able to see only those files which are in the root folder.

And if i move to any sub folders, the File list box is shown empty!!! even when the files are actually present.

I am using the following code below :

Private Sub dirFileName_Change()
fileName.Path = dirFileName.Path
End Sub

where, dirfileName and fileName are the names of Dirlistbox and
FileListbox respectively.

Please help me out!!!!

My mail id is: [email protected]

Thanks,
Makarand