When you set the control to Folder Browse mode using EnableFolderBrowseButton()
] method it will display a Browse for Folder dialog. This dialog has "Network" (under the root Desktop node) node that allows to select unmounted network PCs.
You will not be able, of cause, to navigate to PCs that are not network discoverable. In order to do so, the user will have to manually type the UNC path in the edit box.
So, I think in your case you can use the control as is, without implementing the OnBrowse method.
I have used the control in my Image Cataloguer
] article. You can download the source code and check how it is used for "Output Folder"