This tool is meant for your legally purchased keys. If you need a new key, check:

You might ask: "Why bother? I can just play skirmish."

Here is why the key changer remains relevant:

Type (or paste) your genuine CD key in the format: XXXX-XXXX-XXXX-XXXX-XXXX
Note: Most tools support both 20-digit and 5×4 formats.