我用ASP.NET中操作IIS是编写IISVDir.dll操作IIS
使用方法：
Dim test As New IISVDir()
test.CreateVirtualDir("localhost","vdir","e:","test")
注意：
1、web目录中的test必需存在
2、当此代码用于web中时，出错为不能创建Active组件，
修改“x:WINNTmicrosoft.NETframeworkv1.0.3705CONFIGmachine.config”中的word="AutoGenerate"就能解决.
iisvpath.vb代码

Imports System
Imports ActiveDs
Imports Microsoft.VisualBasic
Namespace iisvpath

Public Class IISVPath

  REM 创建FTP目录
  'ComputerName FTP服务器名（可以为localhost）
  'DirName 要建立的虚拟目录名
  'LinkAddr 该虚拟目录的真实路径
  Function CreateFTPDir(ByVal ComputerName As String, _
  ByVal DirName As String, ByVal LinkAddr As String) As Boolean
  try
  CreateFTPDir= True
  Dim WWWServer, WWWServer1 As ActiveDs.IADs
  Dim WWWVirtualDir, WWWIF As ActiveDs.IADs
  Try
  WWWIF = Getobject("IIS://" & ComputerName & "/MsfTPSVC/1/root")
  Try
  WWWIF.delete("IISFtpVirtualDir", DirName)
  Catch
  End Try
  Catch
  End Try
  WWWServer1 = GetObject("IIS://" & ComputerName & "/MSFTPSVC/1")
  WWWServer = WWWServer1.GetObject("IIsFtpVirtualDir", "Root")
  WWWVirtualDir = WWWServer.Create("IISFtpVirtualDir", DirName)
  WWWVirtualDir.Path = LinkAddr
  WWWVirtualDir.AccessRead = True
  WWWVirtualDir.AccessWrite = False
  WWWVirtualDir.SetInfo()
  CreateFTPDir=true
  catch
  CreateFTPDir=false
  end try
  end function

  REM 建立虚拟目录程序
  'ComputerName WEB服务器名（可以为localhost）
  'DirName 要建立的虚拟目录名
  'LinkAddr 该虚拟目录的真实路径
  'WWWSiteName 站点名称
  Function CreateVirtualDir(ByVal ComputerName As String, _
  ByVal DirName As String, ByVal LinkAddr As String, _
  ByVal WWWSiteName As String) As Boolean
  Try
  CreateVirtualDir = True
  Dim WWWServer, WWWServer1 As ActiveDs.IADs
  Dim WWWVirtualDir, WWWIF As ActiveDs.IADs
  Try
  Try
  WWWIF = GetObject("IIS://" & ComputerName & "/W3SVC/1/Root/" & WWWSiteName)
  Try
  WWWIF.delete("IISWebVirtualDir", DirName)
  Catch
  End Try
  Catch
  End Try
  WWWServer1 = GetObject("IIS://" & ComputerName & "/W3SVC/1")
  WWWServer = WWWServer1.GetObject("IIsWebVirtualDir", "Root")
  WWWVirtualDir = WWWServer.Create("IISWebVirtualDir", WWWSiteName & "/" & DirName)
  WWWVirtualDir.Path = LinkAddr
  WWWVirtualDir.AccessRead = True
  WWWVirtualDir.AccessScript = True
  WWWVirtualDir.SetInfo()
  CreateVirtualDir = True
  Catch
  End Try
  Catch
  CreateVirtualDir = False
  End Try
  End Function

End Class

end Namespace