translate multiple keyframes at once

Here's my situation. I made a rather complex animation in DAZ Studio 3, and it turns out it's a bit too high up. (1st lesson - learn to properly translate for SL before starting.) Anyway, all I really want to do it select all the key frames for the hip all at once and move them all down. I've scoured the UI, tried things that seemed like they should have intuitively worked, but they don't. I'm beginning to think I can't do this due to the lack of replies to my query in the DAZ user group and their forums.

I don't need to use DAZ though. Just need a tool that can read a BVH file and change all the hip bone key frames to use a new value for the z-axis translation. Can something like BVH Hacker do this?

This is a surprisingly easy one, if you know the trick.

You know how uploaded BVH files must include as the first frame a T pose, with all joints at zero, for reference? The final avatar translation is calculated as the difference between the hip translation in frame 1 and that of subsequent frames. So if you want every hip keyframe in the finished animation to end up a bit lower, simply raise the hip some amount above zero in frame 1, leave everything else alone, and the offset gets calculated differently such that the hips end up lower in the final animation.

Awesome! Nice trick. Thanks.