I didn't realize steam activation was an option until just today. I'm unable to activate my original copy of AI-war on steam. (A copy I bought from the Arcen store) because it says my key is already registered with another account. I have never sent my key to anyone and the only two places its been is my hard drive and the original receipt email from Arcen. Has this happened to anyone else?
Edit: A quick search reveals that is has. Most likely a pirate keygen'd my key. great.
Yea, they not only keygen'd it but registered it in steam, which requires something like nerve.
You may be able to solve the problem by emailing valve's support explaining the situation and attaching your receipt from us. If necessary we can look up the original purchase (since you bought it direct) and confirm it's association with the email address it was sent to. But the receipt should be sufficient.
In the past that didn't work because they would say it was an issue for the vendor you bought it from, but more recently folks were getting success via sending their Impulse receipt, etc, so it's probably worth a shot.