Hi Geodav,
Yep, it’s all about getting the T pose at frame 0 in your character the same as the T pose in the blue dude:
http://www.ioflowstudios.com/posts/20150331_235726_post.jpg
Currently I’ve just manually posed her like that, though when I get a chance I’ll do an action that has her in that pose at frame 0 so that she can return to normal for normal animating. The pose is done with rotations only in pose mode and MUST be exported at a scale of 0.01 otherwise horrible things that look an awful lot like she swallowed a black hole happen.
Also, this makehuman character is actually from the stable build and is using the basic rig.
Normally what I prefer to do is bring in two copies of the character, one with a full rigified rig (with all the cool IK/FK stuff) and one just with the basic rig. Then I use rotation constraints between the corresponding bones in the two rigs to make the basic rig sync with the rigify rig. That way I can animate with all the helpers but then for export I just export the basic rig.