diff --git a/Build-Plugin.ps1 b/Build-Plugin.ps1
new file mode 100644
index 0000000..9bf4b7d
--- /dev/null
+++ b/Build-Plugin.ps1
@@ -0,0 +1,175 @@
+# Build-Plugin.ps1
+# Builds and packages the AD Compare plugin for Disco ICT import
+#
+# Prerequisites:
+#   - Visual Studio or MSBuild installed
+#   - Disco solution built (for assembly references and ManifestGenerator)
+#
+# Usage:
+#   .\Build-Plugin.ps1 -DiscoSolutionPath "C:\Path\To\Disco"
+
+param(
+    [Parameter(Mandatory=$true)]
+    [string]$DiscoSolutionPath,
+    
+    [string]$Configuration = "Release"
+)
+
+$ErrorActionPreference = "Stop"
+$PluginDir = $PSScriptRoot
+$PluginName = "Disco.Plugins.ADCompare"
+
+Write-Host "=== AD Compare Plugin Builder ===" -ForegroundColor Cyan
+
+# --- Validate Disco solution path ---
+$discoServicesDir = Join-Path $DiscoSolutionPath "Disco.Services\bin\$Configuration"
+$discoModelsDir = Join-Path $DiscoSolutionPath "Disco.Models\bin\$Configuration"
+$discoDataDir = Join-Path $DiscoSolutionPath "Disco.Data\bin\$Configuration"
+$manifestGenDir = Join-Path $DiscoSolutionPath "Disco.Services.Plugins.ManifestGenerator\bin\$Configuration"
+
+$requiredDlls = @(
+    (Join-Path $discoServicesDir "Disco.Services.dll"),
+    (Join-Path $discoModelsDir "Disco.Models.dll"),
+    (Join-Path $discoDataDir "Disco.Data.dll")
+)
+
+foreach ($dll in $requiredDlls) {
+    if (-not (Test-Path $dll)) {
+        Write-Error "Required assembly not found: $dll`nMake sure the Disco solution is built first ($Configuration configuration)."
+        exit 1
+    }
+}
+
+$manifestGenExe = Join-Path $manifestGenDir "Disco.Services.Plugins.ManifestGenerator.exe"
+if (-not (Test-Path $manifestGenExe)) {
+    Write-Warning "ManifestGenerator not found at: $manifestGenExe"
+    Write-Warning "Will create manifest.json manually instead."
+    $useManifestGen = $false
+} else {
+    $useManifestGen = $true
+}
+
+# --- Find MSBuild ---
+$msbuild = $null
+$vsWhere = "${env:ProgramFiles(x86)}\Microsoft Visual Studio\Installer\vswhere.exe"
+if (Test-Path $vsWhere) {
+    $msbuild = & $vsWhere -latest -requires Microsoft.Component.MSBuild -find "MSBuild\**\Bin\MSBuild.exe" | Select-Object -First 1
+}
+if (-not $msbuild -or -not (Test-Path $msbuild)) {
+    $msbuild = "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\MSBuild.exe"
+}
+if (-not (Test-Path $msbuild)) {
+    Write-Error "MSBuild not found. Install Visual Studio or .NET Framework SDK."
+    exit 1
+}
+Write-Host "Using MSBuild: $msbuild" -ForegroundColor Gray
+
+# --- Update assembly references to point at actual Disco build ---
+$csproj = Join-Path $PluginDir "$PluginName.csproj"
+$csprojContent = Get-Content $csproj -Raw
+$csprojContent = $csprojContent -replace '<HintPath>\.\.\\Disco\.Models\\bin\\Debug\\Disco\.Models\.dll</HintPath>', "<HintPath>$($discoModelsDir)\Disco.Models.dll</HintPath>"
+$csprojContent = $csprojContent -replace '<HintPath>\.\.\\Disco\.Data\\bin\\Debug\\Disco\.Data\.dll</HintPath>', "<HintPath>$($discoDataDir)\Disco.Data.dll</HintPath>"
+$csprojContent = $csprojContent -replace '<HintPath>\.\.\\Disco\.Services\\bin\\Debug\\Disco\.Services\.dll</HintPath>', "<HintPath>$($discoServicesDir)\Disco.Services.dll</HintPath>"
+
+$newtonsoftPath = Get-ChildItem -Path $discoServicesDir -Filter "Newtonsoft.Json.dll" -ErrorAction SilentlyContinue | Select-Object -First 1
+if ($newtonsoftPath) {
+    $csprojContent = $csprojContent -replace '<HintPath>\.\.\\packages\\Newtonsoft\.Json[^<]+</HintPath>', "<HintPath>$($newtonsoftPath.FullName)</HintPath>"
+}
+
+$tempCsproj = Join-Path $PluginDir "$PluginName.build.csproj"
+$csprojContent | Set-Content $tempCsproj -Encoding UTF8
+
+# --- Build ---
+Write-Host "`nBuilding $PluginName ($Configuration)..." -ForegroundColor Yellow
+$buildOutput = Join-Path $PluginDir "bin\$Configuration"
+& $msbuild $tempCsproj /p:Configuration=$Configuration /p:OutputPath=$buildOutput /t:Build /v:minimal
+
+if ($LASTEXITCODE -ne 0) {
+    Remove-Item $tempCsproj -ErrorAction SilentlyContinue
+    Write-Error "Build failed!"
+    exit 1
+}
+Remove-Item $tempCsproj -ErrorAction SilentlyContinue
+
+$pluginDll = Join-Path $buildOutput "$PluginName.dll"
+if (-not (Test-Path $pluginDll)) {
+    Write-Error "Build output not found: $pluginDll"
+    exit 1
+}
+Write-Host "Build successful: $pluginDll" -ForegroundColor Green
+
+# --- Generate Manifest ---
+Write-Host "`nGenerating manifest..." -ForegroundColor Yellow
+
+foreach ($dll in $requiredDlls) {
+    Copy-Item $dll $buildOutput -Force -ErrorAction SilentlyContinue
+}
+
+$depDlls = @("EntityFramework.dll", "System.Web.Mvc.dll", "RazorGenerator.Mvc.dll", "Newtonsoft.Json.dll")
+foreach ($dep in $depDlls) {
+    $depPath = Join-Path $discoServicesDir $dep
+    if (Test-Path $depPath) {
+        Copy-Item $depPath $buildOutput -Force -ErrorAction SilentlyContinue
+    }
+}
+
+if ($useManifestGen) {
+    & $manifestGenExe $pluginDll
+    if ($LASTEXITCODE -ne 0) {
+        Write-Warning "ManifestGenerator failed, creating manifest manually..."
+        $useManifestGen = $false
+    }
+}
+
+if (-not $useManifestGen) {
+    $version = [System.Reflection.AssemblyName]::GetAssemblyName($pluginDll).Version
+    $manifest = @{
+        Id = $PluginName
+        Name = "AD Compare"
+        Author = "Jess"
+        Url = "https://gitea.hideawaygaming.com.au/jessikitty/disco-ad-compare-plugin"
+        Version = $version.ToString()
+        AssemblyPath = "$PluginName.dll"
+        TypeName = "Disco.Plugins.ADCompare.ADComparePlugin"
+        ConfigurationHandlerTypeName = "Disco.Plugins.ADCompare.ConfigurationHandler.ADCompareConfigurationHandler"
+        WebHandlerTypeName = "Disco.Plugins.ADCompare.WebHandler.ADCompareWebHandler"
+        Features = @()
+    }
+    $manifest | ConvertTo-Json -Depth 5 | Set-Content (Join-Path $buildOutput "manifest.json") -Encoding UTF8
+    Write-Host "Manual manifest.json created" -ForegroundColor Green
+}
+
+# --- Package as .discoPlugin ---
+Write-Host "`nPackaging .discoPlugin file..." -ForegroundColor Yellow
+
+$excludePatterns = @(
+    "Disco.Models.*", "Disco.Data.*", "Disco.Services.*", "Disco.Web.*", "Disco.BI.*",
+    "EntityFramework.*", "System.Web.Mvc.*", "RazorGenerator.Mvc.*", "Newtonsoft.Json.*",
+    "*.build.csproj", "*.discoPlugin"
+)
+
+$packageName = "$PluginName-$($version.ToString()).discoPlugin"
+$packagePath = Join-Path $PluginDir $packageName
+
+Get-ChildItem $PluginDir -Filter "*.discoPlugin" | Remove-Item -Force
+
+$filesToPackage = Get-ChildItem $buildOutput -Recurse -File | Where-Object {
+    $file = $_.Name
+    -not ($excludePatterns | Where-Object { $file -like $_ })
+}
+
+$tempPkg = Join-Path $env:TEMP "discoplugin_$([guid]::NewGuid().ToString('N'))"
+New-Item -ItemType Directory -Path $tempPkg -Force | Out-Null
+foreach ($f in $filesToPackage) {
+    $relativePath = $f.FullName.Substring($buildOutput.Length + 1)
+    $destPath = Join-Path $tempPkg $relativePath
+    $destDir = Split-Path $destPath -Parent
+    if (-not (Test-Path $destDir)) { New-Item -ItemType Directory -Path $destDir -Force | Out-Null }
+    Copy-Item $f.FullName $destPath -Force
+}
+
+Compress-Archive -Path "$tempPkg\*" -DestinationPath $packagePath -Force
+Remove-Item $tempPkg -Recurse -Force
+
+Write-Host "`n=== Package created: $packagePath ===" -ForegroundColor Green
+Write-Host "Import this file into Disco ICT via: Configuration > Plugins > Install" -ForegroundColor Cyan