Need a product key

just i need windows vist product key

If it's the key for a system you bought, check the documentation that came with the system, or even the label on the side or bottom of your system

If this is a copy you bought at the store and you've simply lost the packaging, you'll have to contact Microsoft.

If this is a version of Vista you downloaded for free, I'm afraid you're just asking for trouble. :)

specify whether 32 bit or 64one and even if it is an oem or retail version !!!!