Windows multi-threading possible?

Hi, After doing 2 days of research, it seems to me that writing a multi-threaded app in PHP under Windows is not quite possible. Though I found many interesting points, including the php_threads.dll which is still bundled with the latest release, but no documentation is available at all. So I finally decided to ask you, does anyone have any idea how to create separate threads in a php application under Windows? Please let me know if you know a solution, or also if you're 100% certain that it's not possible. Thanks in advance, Akos Bodis Hungary