[visad] Creating Overlay problem

Hi..

  I can create layers(image) from h5 file.   i want to overlap these two
layer one is image and other is India map boundry(MCIDAS data,file-

OUTLINDIA) but problem is that projection of both of are different .

 Image has no information related to projection and lat-long.and
map(MCIDAS) contains these information.how can i mapping between two layers?

Does i need any other information in addition to these two(image and map
file)?how can i change projection of India boundry map file?.



Thanks and Regard
Ankita