If you have no experience with joints and magnets do not expect good results in first try. Rigging figure is much more difficult then sculpting obj IMO
Anyway if you want try explain you step by step - Koshini is better then V4 to improve your skills ;)
Only 1 picture this time - sorry I'm very busy tonight.
- Find Koshini.cr2 in character libraries (maybe Koshini2.cr2) and open in notepad
- Find path to obj file (probably runtimes/geometries/LadyLittlFox/Koshini.obj or Kosini.obz)
- Import Koshini.obj to poser (if you found Kosini.obz file should be unpacked with 7zip or winrar to obj)
- When you have selected Koshini (she is prop now ;) ) in menu object select "create magnet". Mag1 apear in window.
- Move mag base to right hand, magnet goes follw base, later move mag zone. Hand should be in the middle of zone (see picture above).
- On magnet parameters change scale - hands will be smaller, fingers can be bigger then palm (in such situation move mag zone left right till hand will be ok) or hand can be unnatural bend (in this situation translate magnet along y axis).
- If you are satisfied with results create next magnet. Select "mag base1" and press ctrl C, select mag base2 and press ctrl V, in mag base 2 change "translate x" value from negative to positive (means delete "-"). Do the same with mag zones and mags (if you translated mag alongh x axis)
- In menu object select "spawn morph target". New morph apears on prop parameter window. Set morph = 1 and delete magnets.
- Export KoshiniBLABLA.obj to folder where org obj was placed.
- In cr2 file change name of obj (see pt 2) and save file as KoshiniBLABLA.cr2
- When you load koshiniBLA to poser she will looks nice, but her hands do not work correct. You must change theirs parameters in joint editor window. Change center values to fit bones to fingers. Look to this threat:
http://www.renderosity.com/mod/forumpro/showthread.php?thread_id=2748857
I've written there about center of joints, but you cannot copy this parameters, you must find them on your own what probable takes some times.
Correcting joints is most difficult for me so I wish you good luck :)