Hello, I'm writing a program and now trying to find a way to check to see if a Windows XP CD-Key is valid. Obviously the algorithm is not known, but is there an API call in Windows that could do this ...

I did a search and didn't find any results concerning this problem. I've just built a new system and my Windows 7 disc won't boot, so I'm installing Windows XP so I can then install Windows 7 on top ...

You might know your version of Windows (i.e., Windows Home or Windows Pro), and hopefully you knew how to get Windows for cheap or even free, but do you know if it ...