Suggest you tell us more here about exactly what you are trying to do: are you trying to select a computer on a network, and then select a folder within that selected computer ?
And what error message are you getting ?
See this CP article: "Folder Browser component for .NET By Rama Krishna Vavilala"[^
If that doesn't work then see: which is based on Vavilala's CP article[^
Are you using a version of .NET before 3.5; the reason I ask is I remember something on StackOverFlow about you would get an error trying to cast a number to an Environment.SpecialFolder if that were the case.
good luck, Bill