diff --git a/ai_assistants.md b/ai_assistants.md
index 69cd1d2..b7f7941 100644
--- a/ai_assistants.md
+++ b/ai_assistants.md
@@ -17,7 +17,9 @@ option, is on the [MCP server](mcp_server) page.
 1. **Python 3.9 or later.** Nothing else to install: the server uses only
    Python's standard library. On Windows, get it from
    [python.org](https://www.python.org/downloads/) and tick "Add python.exe
-   to PATH" in the installer.
+   to PATH" in the installer. If typing `python` in a terminal opens the
+   Microsoft Store, Python is not installed: that is a shortcut Windows
+   ships in its place.
 2. **The server itself**, one file:
    [`qet_mcp.py`](https://raw.githubusercontent.com/qelectrotech/qelectrotech-source-mirror/master/misc/qet-mcp/qet_mcp.py).
    Save it anywhere, for example next to your drawings. It is not in the
@@ -267,8 +269,27 @@ so Windows users need not install Python themselves. The command becomes
 > before trying any of this against your own build. This section will drop
 > this notice once it does.
 
-A dialog in QElectroTech writes the setup for your assistant with the
-paths filled in, for you to copy.
+**Aide → Connecter un assistant IA…** (*Help → Connect an AI assistant*)
+writes the setup for your assistant with this installation's paths filled
+in:
+
+![The dialog with Claude Desktop chosen, /home/you/drawings as the folder, editing allowed, and the setup text below](https://raw.githubusercontent.com/wiki/qelectrotech/qelectrotech-source-mirror/images/ai-assistant-dialog.png)
+
+1. Pick the assistant: Claude Desktop, Claude Code, GitHub Copilot (VS
+   Code), Cursor, Gemini CLI, Codex CLI or LM Studio.
+2. Pick the folder of drawings it may use (*Dossier accessible*).
+3. Tick *Autoriser l'assistant à modifier les schémas* only if it may edit
+   them. It is unticked by default.
+4. **Copier** (*Copy*), and paste where the dialog says. The dialog writes
+   nothing and starts nothing itself.
+
+It also tells you, in bold, when something is missing:
+
+| Message | Meaning |
+|---|---|
+| *Le serveur MCP n'est pas installé avec cette version* | this QElectroTech was installed without the server: use the download above |
+| *Python est introuvable sur cet ordinateur* | the Python the setup names is not there. On Windows, run the QElectroTech installer again and tick *Python pour l'assistant IA*, or install Python; elsewhere, install Python 3 from your system's packages |
+| *Python n'est peut-être pas installé* (Windows) | only the Microsoft Store shortcut answers to `python`, which opens the Store instead of running the server |
 
 ## ChatGPT, and Claude or Copilot in a web browser
 
diff --git a/images/ai-assistant-dialog.png b/images/ai-assistant-dialog.png
new file mode 100644
index 0000000..d20e1ea
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