[nhc-users] Trouble with NHC?

I am trying to compile the following simple program: module Main where import System.Environment main :: IO () main = do args <- getArgs putStrLn ("Hello, " ++ args !! 0) I get the following error message: solovay@chaos Haskell_Scheme]$ nhc98 program1.hs I/O error (user-defined), call to function `userError': Can't open any of: ./System/Environment.hi /usr/local/include/nhc98/packages/base/System/Environment.hi /usr/local/include/nhc98/System/Environment.hi when trying to read System.Environment. Have I installed nhc98 incorrectly? Or what is it I'm doing wrong? Thanks, --Bob Solovay