diff --git a/Install Script Source/Update.iss b/Install Script Source/Update.iss
new file mode 100644
index 0000000..dea5e5c
--- /dev/null
+++ b/Install Script Source/Update.iss	
@@ -0,0 +1,105 @@
+#define AppName "Worms 2 Plus Update 1.5.8.x to 1.5.8.2"
+#define AppVersion "1.5.8.2"
+#define AppProcess1 "frontend.exe"
+#define AppProcess2 "worms2.exe"
+#define Game "Worms 2"
+#define RegPathCU1 "Software\Team17SoftwareLTD\Worms2"
+#define RegPathLM1 "Software\GOG.com\GOGWORMS2"
+#define RegPathLM2 "Software\Microsoft\DirectPlay\Applications\worms2"
+#define MsgRunning 'Worms 2 is running. Please close the game before installing the patch.'
+
+[Setup]
+AppId={{B90927CD-E317-466C-8B6B-BC9042E2F1D2}
+AppName={#AppName}
+AppVersion={#AppVersion}
+DefaultDirName={code:GetDefaultDir}
+DisableProgramGroupPage=yes
+DirExistsWarning=no
+DisableDirPage=no
+AppendDefaultDirName=no
+DisableReadyPage=yes
+AlwaysShowDirOnReadyPage=yes
+CloseApplications=yes
+OutputBaseFilename={#AppName}
+SetupIconFile=image-icon.ico
+WizardImageFile=image-large.bmp
+WizardImageStretch=no
+WizardSmallImageFile=image-small.bmp
+Compression=none
+Uninstallable=no
+PrivilegesRequired=admin
+ShowLanguageDialog=yes
+RestartIfNeededByRun=no
+
+[Languages]
+Name: "nl"; MessagesFile: "compiler:Languages\Dutch.isl"
+Name: "en"; MessagesFile: "compiler:Default.isl"
+Name: "fr"; MessagesFile: "compiler:Languages\French.isl"
+Name: "de"; MessagesFile: "compiler:Languages\German.isl"
+Name: "it"; MessagesFile: "compiler:Languages\Italian.isl"
+Name: "pl"; MessagesFile: "compiler:Languages\Polish.isl"
+Name: "pt"; MessagesFile: "compiler:Languages\Portuguese.isl"
+Name: "es"; MessagesFile: "compiler:Languages\Spanish.isl"
+Name: "es_la"; MessagesFile: "Languages\SpanishLA.isl"
+Name: "sv"; MessagesFile: "Languages\Swedish.isl"
+
+[Files]
+Source: "..\Patch\All Installs\fkUpdate.dll"; DestDir: "{app}\"; Flags: ignoreversion recursesubdirs createallsubdirs overwritereadonly;
+Source: "..\Patch\All Installs\Teams\Internet.dat"; DestDir: "{app}\"; Flags: ignoreversion recursesubdirs createallsubdirs overwritereadonly;
+
+[Code]
+var InstalledDir : string;
+function IsAppRunning(const FileName: string): Boolean;
+var
+  FWMIService: Variant;
+  FSWbemLocator: Variant;
+  FWbemObjectSet: Variant;
+begin
+  Result := false;
+  FSWbemLocator := CreateOleObject('WBEMScripting.SWBEMLocator');
+  FWMIService := FSWbemLocator.ConnectServer('', 'root\CIMV2', '', '');
+  FWbemObjectSet := FWMIService.ExecQuery(Format('SELECT Name FROM Win32_Process Where Name="%s"',[FileName]));
+  Result := (FWbemObjectSet.Count > 0);
+  FWbemObjectSet := Unassigned;
+  FWMIService := Unassigned;
+  FSWbemLocator := Unassigned;
+end;
+
+function InitializeSetup: boolean;
+begin
+  Result := not IsAppRunning('{#AppProcess1}');
+  if Result then begin
+    Result := not IsAppRunning('{#AppProcess2}');
+  end;
+  if not Result then
+    MsgBox('{#MsgRunning}', mbError, MB_OK);
+end;
+
+function GetDefaultDir(def: string): string;
+begin
+  if RegQueryStringValue(HKLM32, '{#RegPathLM1}', 'PATH', InstalledDir) then begin
+  end 
+  else if RegQueryStringValue(HKLM32, '{#RegPathLM2}', 'Path', InstalledDir) then begin
+  end;    
+  Result := InstalledDir;    
+end;
+
+function NextButtonClick(PageId: Integer): Boolean;
+begin
+    Result := True;
+    if (PageId = wpSelectDir) then begin
+      if (not FileExists(ExpandConstant('{app}\{#AppProcess2}'))) then begin
+        MsgBox('{#Game} could not be found in that folder. If it is the correct folder, please try reinstalling the game.', mbError, MB_OK);
+        Result := False;
+      end
+    end;
+end;
+
+[Messages]
+SelectLanguageTitle=Select Language
+SelectLanguageLabel=Select the language for setup
+SetupAppTitle={#AppName}
+SetupWindowTitle={#AppName} 
+WelcomeLabel1={#AppName} 
+en.SelectDirLabel3=Setup will try to detect where {#Game} is installed.
+en.SelectDirBrowseLabel=If it has not been detected, click Browse to specify the folder.
\ No newline at end of file