I have a Gateway DX4300 that came with Windows Vista Home Premium 64 bit. I see this model also came out with a Windows 7 Home Premium 64 bit version later. I found a recovery disk online for this same model Gateway and have choices for either the Vista or 7. My question is if I were to buy the 7 version and run it will it work without issues even though my computer originally came with the Vista version? I'm just worried that if I use it it'll not want to activate windows because it originally came with Vista instead of 7, even though they're designed for the same model computer. Anyone know if it'll work?