I am trying to compile this which is giving me hell

unit MyError;

{
Custom error reporting routines.

*** WINDOWS VERSION ***
}

interface
procedure Say(msg : String);
procedure SockError(msg : String);
procedure SockSay(msg : String);
procedure GenError(msg : String);implementation
uses sockets;
procedure Say(msg : String);
begin
   Writeln(stderr, msg);
end;
procedure SockError(msg : String);
begin
   Writeln(stderr, msg, SocketError);
   Halt(1);
end;
procedure SockSay(msg : String);
begin
   Writeln(stderr, msg, SocketError);
end;
procedure GenError(msg : String);
begin
   Say(msg);
   Halt(1);
end;
end.

The error message is this. I am new to this so I am having trouble understanding what's wrong. the error message is

myerror-win.pas(1,6) Error: Illegal unit name: MYERROR
myerror-win.pas(9,1) Fatal: Syntax error, ; expected but INTERFACE found

Exit code: 1

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I would say the error is quite clear.
The name of the unit must be the same as the filename it is in: myerror-win in this case.

Michael.