It's a local network, .NET web application ( I don't know the correct expression in english) the platform is .NET but ther is a part that is asp. Theese asp-pages are very complicated so it is nessessary to keep them for now. However I am changing some asp code to be able to either proceed to other asp pages or go a new .NET web application. That requires to redirect. I am not sure this makes it clearer.

Now I have the path to network drives and corresponding local names. The drives are listed in the dropdownlist. Select a drive and it should be mapped.