Eugenia writes: "Trumpet Software is mostly known for their Internet communications software package, Trumpet Winsock, which has been adopted by the Internet world back in 1995, at the times where Windows 3.1 and Win95 did not come as standard with full internet connetion capabilities. But the main product these days for Trumpet Software is PetrOS, a 32-bit Operating System, which has the goal to be compatible by all means (binary and API compatible) with Microsoft Windows. OSNews is interviewing the main architect behind the project, Peter Tattam, who talks in depth about PetrOS, and also there is shown an early screenshot of the PetrOS GUI, which is still under heavy development." And it's been (not surprizingly) under heavy development for a while. Building a Windows-compatible OS from scratch surely isn't easy, but from this interview (including screenshots) they're having quite a go of it.