Displaying elevation data

[Vishal Nagpal]

Thanks for quick response,
I did see the images of terrain data on the mentioned url, they are
interesting and suit my requirement, i will certainly explore more of it, 

Is it possible to keep the display in 2D itself but use dt1 files for query
in mapserver, 
how to i know elevation at a certain point even if i don't get the display.

the application i am developing is in its initial stages,
do i shift to grass or continue using both.