The converter is a COMMAND-LINE TOOL. That means it's really inconvenient to use, and lacks some features such as moving frames around. You'll have to bear with me. I would like to make a GUI version later, but I thought I would release the command-line version so anybody who just needs to convert models can do so immediately.
I've tested it on 32-bit Windows and Linux, but not thoroughly. It was developed on Windows. The source is licensed under the GPL and publicly available.
You NEED to read the guide AND the main qwalk page, because there's currently no other way to know how to use the converter.
And this is NOT a stable release. It's not even a beta. It's an alpha. I made the decision to make a release only two hours ago, and cobbled it together since then. It's possible I left an obvious bug in or forgot something stupid. I have tested it, but not painstakingly. If you are reading this and want to make a news post about it, please include this disclaimer!
If you have questions, found a bug, or would like to request a feature, let me know. Post on this thread, or email me at sajt at icculus dot org.