can't use NetcdfFile

[vishalm1975 at gmail.com]

Hi,
I'm trying to open a Netcdf file using NetcdfFile but I always get an
import error DLL failed
even though I've tried using all these:

import Numeric
from Scientific.IO.NetCDF import NetCDFFile
from Scientific.IO import NetCDF
from Scientific import *
from Scientific.IO.NetCDF import *

I've got Scientific,Numeric and numpy installed
I'd appreciate anyone's help

Thanks
Vishal.