How to refer to class which was not yet declared?

[CrazyBoy]

I already found it searching web. But I still have some nasty errors :-) Saying things like that I am missing ';' when I try to create new instance of MyGlobalClass and _FILE. I cannot find out where the ; could be missing. global.h:

class MyGlobalClass{
	private:		
		CLParser CLPars;
		FILE_ File;
};

Any idea why this could happen?