Took steelix over a year or so to complete the Halo CE tag converter. But the tag formats for h2 are pretty similar in the .map files as they are in the source formats so it might be a hell of allot easier. It doesn't require byte swapping like in h1, but just swapping around the structure of the data blocks from direct access to sequential access and adding on the tag header for many different types of tags. I haven't look much into the map tag structures for h2v yet so I'm not sure, but i'm assuming it's similar to halo 2 xbox. Give it a few months before someone posts progress on a tag converter for h2. I plan to look into building one myself once I figure out more about h2 guerrilla tag structures.