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function VAllocMem(Size: Integer): Pointer;
begin
  Result := VirtualAlloc(nil, Size, MEM_COMMIT, PAGE_READWRITE);
end;

procedure VFreeMem(var P);
begin
  VirtualFree(Pointer(P), 0, MEM_FREE);
end;

function PEFile.OpenPeFile(Filename: String):Boolean;
var
  aFile               : hFile;
  ofStruct            : _OFSTRUCT;
  BytesRead           : Cardinal;
begin
  result := FALSE;
  aFile := OpenFile(Pchar(Filename),ofStruct,OF_READ);
  if(GetLastError<>0) then showmessage(SysErrorMessage(GetLastError));
  dwFileSize := GetFileSize(aFile,nil);
  If aFile <> 0 Then
    begin
      If ReadFile(aFile,DosHeader,SizeOf(DosHeader),BytesRead,nil) Then
        begin
          If DosHeader.e_magic = IMAGE_DOS_SIGNATURE Then
            begin
              SetFilePointer(aFile, DosHeader._lfanew, nil, FILE_BEGIN);
              If ReadFile(aFile,NtHeader,SizeOf(NtHeader),BytesRead,nil) Then
                begin
                  result := True;
                  FirstSection := DosHeader._lfanew + sizeof(IMAGE_NT_HEADERS);
                  SectionNum := NtHeader.FileHeader.NumberOfSections;
                  pmemory:=VAllocMem(dwFileSize); // fix later
                  SetFilePointer(aFile, 0, nil, FILE_BEGIN);
                  ReadFile(aFile,pmemory^,dwFileSize,BytesRead,nil);
                  Copymemory(@SectionHeaders,Pointer(Integer(pmemory)+FirstSection),SectionNum*SizeOf(_IMAGE_SECTION_HEADER));
                end;
            end;
        end;
    end;
    CloseHandle(aFile);
end;					

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procedure PEFile.FreeMemory;
begin
  VFreeMem(pmemory);
end;