displacement map problems from mudbox to xsi

[arun_ican]

Hi,
I am trying to export displacement map from mudbox for a character in xsi. I encountered the following problems:-

* the displacement map appears to be red gradient instead of black to white
gradient. After some attempts i got through but i wanna know y it actually
occured so

* the displacement map when connected to ma character shows off well in the
body portion of the character whereas the head and feet got displaced like
spikes and seemed all haywire with no detail.

Please help me with the same.........Thank you in advance.

Happy sculpting......cheers.....\m/