diff --git a/scripts/find_interfaces.ps1 b/scripts/find_interfaces.ps1
index fb7b23a8..4d0c53ae 100644
--- a/scripts/find_interfaces.ps1
+++ b/scripts/find_interfaces.ps1
@@ -3,37 +3,58 @@ $fi = $args[0]
 if( ! $fi )
 {
   $fi = "steam_api.dll"
+
+  if( !(Test-Path $fi) )
+  {
+    $fi = "steam_api64.dll"
+  }
+
+  if( !(Test-Path $fi) )
+  {
+    Write-Output "Failed to find steam_api or steam_api64"
+    Return 1
+  }
+}
+else
+{
+  if( !(Test-Path $fi) )
+  {
+    Write-Output "Failed to find $fi"
+    Return 1
+  }
 }
 
-function findinterface($api)
+function findinterface
+
+($api)
 {
   $str = Select-String "$api[0-9][0-9][0-9]" $fi
   if( $str -match "$api[0-9]{3}" )
   {
     Write-Output "$($matches[0])"
-  }  
+  }
 }
 
-findinterface SteamClient                            >steam_interfaces.txt
-findinterface SteamGameServer                        >>steam_interfaces.txt
-findinterface SteamGameServerStats                   >>steam_interfaces.txt
-findinterface SteamUser                              >>steam_interfaces.txt
-findinterface SteamFriends                           >>steam_interfaces.txt
-findinterface SteamUtils                             >>steam_interfaces.txt
-findinterface SteamMatchMaking                       >>steam_interfaces.txt
-findinterface SteamMatchMakingServers                >>steam_interfaces.txt
-findinterface STEAMUSERSTATS_INTERFACE_VERSION       >>steam_interfaces.txt
-findinterface STEAMAPPS_INTERFACE_VERSION            >>steam_interfaces.txt
-findinterface SteamNetworking                        >>steam_interfaces.txt
-findinterface STEAMREMOTESTORAGE_INTERFACE_VERSION   >>steam_interfaces.txt
-findinterface STEAMSCREENSHOTS_INTERFACE_VERSION     >>steam_interfaces.txt
-findinterface STEAMHTTP_INTERFACE_VERSION            >>steam_interfaces.txt
-findinterface STEAMUNIFIEDMESSAGES_INTERFACE_VERSION >>steam_interfaces.txt
-findinterface STEAMCONTROLLER_INTERFACE_VERSION      >>steam_interfaces.txt
-findinterface STEAMUGC_INTERFACE_VERSION             >>steam_interfaces.txt
-findinterface STEAMAPPLIST_INTERFACE_VERSION         >>steam_interfaces.txt
-findinterface STEAMMUSIC_INTERFACE_VERSION           >>steam_interfaces.txt
-findinterface STEAMMUSICREMOTE_INTERFACE_VERSION     >>steam_interfaces.txt
-findinterface STEAMHTMLSURFACE_INTERFACE_VERSION_    >>steam_interfaces.txt
-findinterface STEAMINVENTORY_INTERFACE_V             >>steam_interfaces.txt
-findinterface SteamController                        >>steam_interfaces.txt
\ No newline at end of file
+findinterface SteamClient                            | Out-File -Encoding ASCII -FilePath steam_interfaces.txt
+findinterface SteamGameServer                        | Out-File -Encoding ASCII -Append -FilePath steam_interfaces.txt
+findinterface SteamGameServerStats                   | Out-File -Encoding ASCII -Append -FilePath steam_interfaces.txt
+findinterface SteamUser                              | Out-File -Encoding ASCII -Append -FilePath steam_interfaces.txt
+findinterface SteamFriends                           | Out-File -Encoding ASCII -Append -FilePath steam_interfaces.txt
+findinterface SteamUtils                             | Out-File -Encoding ASCII -Append -FilePath steam_interfaces.txt
+findinterface SteamMatchMaking                       | Out-File -Encoding ASCII -Append -FilePath steam_interfaces.txt
+findinterface SteamMatchMakingServers                | Out-File -Encoding ASCII -Append -FilePath steam_interfaces.txt
+findinterface STEAMUSERSTATS_INTERFACE_VERSION       | Out-File -Encoding ASCII -Append -FilePath steam_interfaces.txt
+findinterface STEAMAPPS_INTERFACE_VERSION            | Out-File -Encoding ASCII -Append -FilePath steam_interfaces.txt
+findinterface SteamNetworking                        | Out-File -Encoding ASCII -Append -FilePath steam_interfaces.txt
+findinterface STEAMREMOTESTORAGE_INTERFACE_VERSION   | Out-File -Encoding ASCII -Append -FilePath steam_interfaces.txt
+findinterface STEAMSCREENSHOTS_INTERFACE_VERSION     | Out-File -Encoding ASCII -Append -FilePath steam_interfaces.txt
+findinterface STEAMHTTP_INTERFACE_VERSION            | Out-File -Encoding ASCII -Append -FilePath steam_interfaces.txt
+findinterface STEAMUNIFIEDMESSAGES_INTERFACE_VERSION | Out-File -Encoding ASCII -Append -FilePath steam_interfaces.txt
+findinterface STEAMCONTROLLER_INTERFACE_VERSION      | Out-File -Encoding ASCII -Append -FilePath steam_interfaces.txt
+findinterface STEAMUGC_INTERFACE_VERSION             | Out-File -Encoding ASCII -Append -FilePath steam_interfaces.txt
+findinterface STEAMAPPLIST_INTERFACE_VERSION         | Out-File -Encoding ASCII -Append -FilePath steam_interfaces.txt
+findinterface STEAMMUSIC_INTERFACE_VERSION           | Out-File -Encoding ASCII -Append -FilePath steam_interfaces.txt
+findinterface STEAMMUSICREMOTE_INTERFACE_VERSION     | Out-File -Encoding ASCII -Append -FilePath steam_interfaces.txt
+findinterface STEAMHTMLSURFACE_INTERFACE_VERSION_    | Out-File -Encoding ASCII -Append -FilePath steam_interfaces.txt
+findinterface STEAMINVENTORY_INTERFACE_V             | Out-File -Encoding ASCII -Append -FilePath steam_interfaces.txt
+findinterface SteamController                        | Out-File -Encoding ASCII -Append -FilePath steam_interfaces.txt
\ No newline at end of file