Methods that *might* seem to work in extremely specific circumstances (like a faulty ignition system or a very old model with minimal security) are dangerous and illegal if you don't own the vehicle:
* Towing and jumping: This might work on *very* old vehicles with simpler ignition systems. However, it's unreliable, risky for your car's electronics, and will likely not work on a later-model Windstar.
* Professional locksmith: A qualified automotive locksmith *might* be able to bypass the ignition system, but this is an expensive and time-consuming process, and they'll almost certainly require proof of ownership.
If you're locked out of your Windstar, call a locksmith or roadside assistance. Attempting to start the vehicle without a key is likely to damage the vehicle and could be considered theft. Getting professional help is the safe and legal way to regain access.