is this possible to edit bones like in kama scripts (sa) in zmodeller?

[GTPunk]

all my works maded in gims. at many skins of mine, which i working on, bones and original mesh doesnt fits up. for example,if eyes mesh are far away from bones, they will come out from eyelids.or if arms are longer or shorter,it will be like pictures below.


and my question is - is this possible to edit bones like in kama scripts (sa) in zmodeller? and if yes,can anybody help me with that?