Great links, but I think KB466 is looking for some easy instructions hot to remove heads & hands, and not for information on body modifications.
KB466, my methods dor DML bodies:
Head removal: most heads are vinyl and can be remove by holding them onder a running tap of hot water for 1 minute. That will soften the vinyl and you can pull the head of or use a small flat screwdriver to pry off the head from te neckpost.
Arms:
Don't remove the arms, they are not ment to be taken off! Instead, you can just pull off the hands by taking a firm grip on the wrist-hinge and pull the hand off.
Hope these tips help!
Good luck