Problem Running Gnat On Windows 95

[terence@agt.net]

	I am new to programming, and wish to learn to program in Ada.  I
reciently downloaded the Windows 95 version of Gnat, and am having
some troubles getting it to work properly.
	When I try to compile the simple "Hello World" program that comes in
the examples directory with the software, by typing "gcc -c hello.adb"
I get the following response: 
GCC.EXE: hello.adb: No such file or directory.
	When I try adding the path to the command by typing 
"gcc -c c:\gnat301a\examples\hello.adb" I get the following response:
c:\gnat301a\examples\hello.adb(1) : 06: "Gnat.Io (spec)" is not a
language defined unit       compilation abandoned.
	I get relatively the same response when trying to compile other
example programs.
	I have run the setpath.bat, although I believe that this could have
something to do with the problem, as when it is run it gives each of
the commands as follows:
	C:\gnat301a>set ADA_INCLUDE_PATH=\ADAINCLUDE
	OUT OF ENVIRONMENT SPACE
	etc, etc, etc, with each command line being followed with the Out of
environment space message.  I have tried running the setpath.bat in
various ways and once in a while can get it to run the first couple of
parimeters without the Out of environment space message, but the later
ones always have it.
	I am kind of impatient to get started into this type of programming,
and any help would be greatly appriciated.  Thanx.  

terence@agt.net