anyone heard of avmotion?

I was on a forum about 2 years ago just was looking for free animation programs and saw this link to a download to Avmotion and it supported .bvh files.. only one problem.. how the heck do I get the avatar t pose to work as an animation? it just stands tehre like a T and well I don't see any freakin Animation model anywhere on the site for the animations and WHY is it that once they are uploaded the bottom half of their body suddenly goes dumb and sometimes only the hands work.. if I don't use the special model for sl but it just gets stick mid animation bar and is locked. and same with avimator just avimator sucks even worse since whenever I try to move the limbs they suddenly flip to like 180 degrees be hind and just shudder like they're stuck until I use the right hand sliders .. geez.. and it doesn't even match the limbs properly.. they go down then match instead of matching on the proper level and angle. then again Iwas using an animation model for that test. but I wasn't pressing play so it should work shouldn't it? why does animating have to be SO HARD? I've been fussing with it for a year and a half and I just finally came here to read anywhere... wherever it may be to get the lower half of the body to just fking work.. and sitting never works in pose mode it just floats mid air. but I've seen some that sit on the ground and it burns me that I can't get that to happen.