diff --git a/Sandbox Scripts/prepare.ps1 b/Sandbox Scripts/prepare.ps1
index eb4bd86..ad59d08 100644
--- a/Sandbox Scripts/prepare.ps1	
+++ b/Sandbox Scripts/prepare.ps1	
@@ -4,8 +4,9 @@
 # take all *.eml and make .mht copies.
 
 Copy-Item './extract.py' '..';
-$pattern = [regex] "[/ A-z0-9\[\]\{\}\(\)\-_.:`"'+]{1,251}(\.zip)";
-Get-ChildItem | Where-Object {$_.name -match $pattern } | Group-Object -Property Name | ForEach-Object {
-    Copy-Item './..';
-}
+
+Get-ChildItem | Where-Object { $_.name -match '\.zip'} | ForEach-Object {Write-Output $_.name }
+
+$files = Get-ChildItem | Group-Object -Property extension -NoElement | Where-Object {$_.extension -like "zip"};
+$files | Where-Object {$_.extension -like "zip"} | ForEach-Object { Write-Output $_.name};
 Write-Output Done;
\ No newline at end of file