Code behind works in VS2010 but not when published in IIS

Imports System.Collections.ObjectModel Imports System.Management.Automation 
Imports System.Management.Automation.Runspaces Imports System.Text 
Imports System.IO      
Protected Sub Button1_Click(ByVal sender As Object, ByVal e As EventArgs) Handles Button1.Click 
         If DropDownList1.Text = "ABCD" Then 
            Label1.Text = " \\ServerB"         End If  
        If DropDownList1.Text = "EFGH" Then 
            Label1.Text = " \\ServerC"         End If  
        If DropDownList1.Text = "IJKL" Then 
            Label1.Text = " \\ServerD"         End If  
        If DropDownList1.Text = "MNOP" Then 
            Label1.Text = " \\ServerE"         End If  
        'Maps the printer from the selections above. 
        Label2.Text = "rundll32 printui.dll,PrintUIEntry /q /in /c\\" 
        Label3.Text = " /n" 
        Label4.Text = Label2.Text & Label3.Text & Label1.Text & "\" & TextBox3.Text 
                 'Sets it as default 
        If RadioButton1.Checked = True Then 
            Label5.Text = Label2.Text & " /y" & Label1.Text & "\" & TextBox3.Text 
        End If                  'Sets it for all users 
        If RadioButton2.Checked = True Then 
            Label6.Text = Label2.Text & " /ga" & Label1.Text & "\" & TextBox3.Text 
        End If          'Powershell commands 
        Dim printerserver As String = CStr(Label1.Text) 
        Dim printer As String = CStr(TextBox3.Text) 
        Dim printcmd As String = CStr(Label2.Text) 
        Dim networkpath As String = CStr(Label4.Text) 
        Dim networkdefault As String = CStr(Label5.Text) 
        Dim allusers As String = CStr(Label6.Text)    
        Shell(networkpath, AppWinStyle.Hide)   
        Shell(networkdefault, AppWinStyle.Hide)   
        Shell(allusers, AppWinStyle.Hide)   
        'Clears the screen so that a new printer can be added. 
        TextBox3.Text = ""         RadioButton1.Checked = False 
        RadioButton2.Checked = False         RadioButton3.Checked = False 
        RadioButton4.Checked = False         DropDownList1.Text = ""   
    End Sub     
<%@ Page Language="vb" AutoEventWireup="false" CodeBehind="WebForm1.aspx.vb" Inherits="WebApplication1.WebForm1" %>

I have an ASP.NET site I built for our users to map a network printer. When I test it, it maps the printer without any probelms. When I publish it to IIS, it acts like it's going to run, but never tries to map it. Any suggestions or answers will be greatly appreciated. I have checked all the permissions, I have tried it as a web app and a web site, I have tried to publish both and I have tried to copy and paste the folders in the root folder. I have added references to the Microsoft.Powershell.XXXX. I have changed it from "CodeBehind" to "CodeFile" and I have changed the "AutoEventWireup" to "true". There are no errors in the event log and none on screen. It clears the fields, like it should at the end of the code and that's it. I am not sure what else to do now. Thank you.