.bvh is a file format for motion. Mo-cap is a physical capture of motion described above and can be found in .bvh format. As to Poser, you can obviously generate motion and then export it as a .bvh file. This can be brought into various programs, like Life Forms for further development or used to move Poser generated mesh via bones in programs like Cinema4d, Electric Image, etc. In my limited experience, the export/import affair isn't exactly the easiest, as issues like axis orientation, figure scale and positioning, etc complicate the process. Poser Pro Pack may or may not simplify depending on your program (Cinema4D, Lightwave, 3dmax etc). manowar